The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1135 advisory.

  - An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it     allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the     security controls. This occurs for certain uri_whitespace configuration settings. (CVE-2020-25097)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1086 advisory.

  - When binding against a DN during authentication, the reply from 389-ds-base will be different whether the     DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in     the LDAP database. (CVE-2020-35518)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1064 advisory.

  - QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm in Red Hat Enterprise Linux 8.3     (CVE-2021-20295)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1145 advisory.

  - A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions     (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being     called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to     force an invalid signature, causing an assertion failure or possible validation. The highest threat to     this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-20305)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9121 advisory.

  - The X.509 GeneralName type is a generic type for representing different types of names. One of those name     types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different     instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both     GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a     possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1)     Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in     an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp     authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an     attacker can control both items being compared then that attacker could trigger a crash. For example if     the attacker can trick a client or server into checking a malicious certificate against a malicious CRL     then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a     certificate. This checking happens prior to the signatures on the certificate and CRL being verified.
    OpenSSL's s_server, s_client and verify tools have support for the -crl_download option which implements     automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an     unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of     EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will     accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue.
    Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected     1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w). (CVE-2020-1971)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1072 advisory.

  - samba: Out of bounds read in AD DC LDAP server (CVE-2021-20277)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9164 advisory.

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

  - In audit_free_lsm_field of auditfilter.c, there is a possible bad kfree due to a logic error in     audit_data_to_entry. This could lead to local escalation of privilege with no additional execution     privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-150693166References: Upstream kernel (CVE-2020-0444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-1093 advisory.

  - An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
    (CVE-2021-3347)

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c, there is a possible use after free due to a logic     error. This could lead to local escalation of privilege with no additional execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-147802478References: Upstream kernel (CVE-2020-0466)

  - A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions     in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race     conditions were implicitly introduced in the commits that added VSOCK multi-transport support.
    (CVE-2021-26708)

  - An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic.c in the Linux kernel before     5.9.2. It has an infinite loop related to improper interaction between a resampler and edge triggering,     aka CID-77377064c3a9. (CVE-2020-27152)

  - In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking     in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal     in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker     has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are     proxied via an attacker-selected backstore. (CVE-2020-28374)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1068 advisory.

  - Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In     Flatpack since version 0.9.4 and before version 1.10.2 has a vulnerability in the file forwarding     feature which can be used by an attacker to gain access to files that would not ordinarily be allowed by     the app's permissions. By putting the special tokens `@@` and/or `@@u` in the Exec field of a Flatpak     app's .desktop file, a malicious app publisher can trick flatpak into behaving as though the user had     chosen to open a target file with their Flatpak app, which automatically makes that file available to the     Flatpak app. This is fixed in version 1.10.2. A minimal solution is the first commit `Disallow @@ and @@U     usage in desktop files`. The follow-up commits `dir: Reserve the whole @@ prefix` and `dir: Refuse to     export .desktop files with suspicious uses of @@ tokens` are recommended, but not strictly required. As a     workaround, avoid installing Flatpak apps from untrusted sources, or check the contents of the exported     `.desktop` files in `exports/share/applications/*.desktop` (typically     `~/.local/share/flatpak/exports/share/applications/*.desktop` and     `/var/lib/flatpak/exports/share/applications/*.desktop`) to make sure that literal filenames do not follow     `@@` or `@@u`. (CVE-2021-21381)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-1071 advisory.

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9151 advisory.

  - An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a     client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was     present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL     pointer dereference will result, leading to a crash and a denial of service attack. A server is only     vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS     clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of     these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in     OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j). (CVE-2021-3449)

  - The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a     certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow     certificates in the chain that have explicitly encoded elliptic curve parameters was added as an     additional strict check. An error in the implementation of this check meant that the result of a previous     check to confirm that certificates in the chain are valid CA certificates was overwritten. This     effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a     purpose has been configured then there is a subsequent opportunity for checks that the certificate is a     valid CA. All of the named purpose values implemented in libcrypto perform this check. Therefore, where     a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A     purpose is set by default in libssl client and server certificate verification routines, but it can be     overridden or removed by an application. In order to be affected, an application must explicitly set the     X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification     or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions     1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k.
    OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
    (CVE-2021-3450)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9150 advisory.

  - The X.509 GeneralName type is a generic type for representing different types of names. One of those name     types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different     instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both     GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a     possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1)     Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in     an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp     authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an     attacker can control both items being compared then that attacker could trigger a crash. For example if     the attacker can trick a client or server into checking a malicious certificate against a malicious CRL     then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a     certificate. This checking happens prior to the signatures on the certificate and CRL being verified.
    OpenSSL's s_server, s_client and verify tools have support for the -crl_download option which implements     automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an     unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of     EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will     accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue.
    Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected     1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w). (CVE-2020-1971)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1002 advisory.

  - Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In     Flatpack since version 0.9.4 and before version 1.10.2 has a vulnerability in the file forwarding     feature which can be used by an attacker to gain access to files that would not ordinarily be allowed by     the app's permissions. By putting the special tokens `@@` and/or `@@u` in the Exec field of a Flatpak     app's .desktop file, a malicious app publisher can trick flatpak into behaving as though the user had     chosen to open a target file with their Flatpak app, which automatically makes that file available to the     Flatpak app. This is fixed in version 1.10.2. A minimal solution is the first commit `Disallow @@ and @@U     usage in desktop files`. The follow-up commits `dir: Reserve the whole @@ prefix` and `dir: Refuse to     export .desktop files with suspicious uses of @@ tokens` are recommended, but not strictly required. As a     workaround, avoid installing Flatpak apps from untrusted sources, or check the contents of the exported     `.desktop` files in `exports/share/applications/*.desktop` (typically     `~/.local/share/flatpak/exports/share/applications/*.desktop` and     `/var/lib/flatpak/exports/share/applications/*.desktop`) to make sure that literal filenames do not follow     `@@` or `@@u`. (CVE-2021-21381)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-0990 advisory.

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials.  (CVE-2021-23984)

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Thunderbird 78.8. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code.  (CVE-2021-23987)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-0993 advisory.

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials.  (CVE-2021-23984)

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Thunderbird 78.8. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code.  (CVE-2021-23987)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-0996 advisory.

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials.  (CVE-2021-23984)

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Thunderbird 78.8. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code.  (CVE-2021-23987)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9137 advisory.

  - The X.509 GeneralName type is a generic type for representing different types of names. One of those name     types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different     instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both     GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a     possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1)     Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in     an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp     authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an     attacker can control both items being compared then that attacker could trigger a crash. For example if     the attacker can trick a client or server into checking a malicious certificate against a malicious CRL     then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a     certificate. This checking happens prior to the signatures on the certificate and CRL being verified.
    OpenSSL's s_server, s_client and verify tools have support for the -crl_download option which implements     automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an     unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of     EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will     accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue.
    Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected     1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w). (CVE-2020-1971)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-0992 advisory.

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials.  (CVE-2021-23984)

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Thunderbird 78.8. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code.  (CVE-2021-23987)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-9136 advisory.

  - An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations     often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success     or failure of each one is reported to the backend driver, and the backend driver then loops over the     results, performing follow-up actions based on the success or failure of each operation. Unfortunately,     when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively     implying their success from the success of related batch elements. In other cases, errors resulting from     one batch element lead to further batch elements not being inspected, and hence successful ones to not be     possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are     vulnerable. Linux backends run in HVM / PVH modes are not vulnerable. This affects arch/*/xen/p2m.c and     drivers/xen/gntdev.c. (CVE-2021-26932)

  - An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to     the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be     encountered. In one case, an error encountered earlier might be discarded by later processing, resulting     in the caller assuming successful mapping, and hence subsequent operations trying to access space that     wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery     from the error. This affects drivers/block/xen-blkback/blkback.c. (CVE-2021-26930)

  - An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI     backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially     being at least under the influence of guests (such as out of memory conditions), it isn't correct to     assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running     in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.
    (CVE-2021-26931)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9135 advisory.

  - An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations     often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success     or failure of each one is reported to the backend driver, and the backend driver then loops over the     results, performing follow-up actions based on the success or failure of each operation. Unfortunately,     when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively     implying their success from the success of related batch elements. In other cases, errors resulting from     one batch element lead to further batch elements not being inspected, and hence successful ones to not be     possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are     vulnerable. Linux backends run in HVM / PVH modes are not vulnerable. This affects arch/*/xen/p2m.c and     drivers/xen/gntdev.c. (CVE-2021-26932)

  - An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to     the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be     encountered. In one case, an error encountered earlier might be discarded by later processing, resulting     in the caller assuming successful mapping, and hence subsequent operations trying to access space that     wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery     from the error. This affects drivers/block/xen-blkback/blkback.c. (CVE-2021-26930)

  - An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI     backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially     being at least under the influence of guests (such as out of memory conditions), it isn't correct to     assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running     in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.
    (CVE-2021-26931)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-0966 advisory.

  - A flaw was found in pki-core. An attacker who has successfully compromised a key could use this flaw to     renew the corresponding certificate over and over again, as long as it is not explicitly revoked. The     highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-20179)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9130 advisory.

  - Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to     remote code execution in certain Python applications that accept floating-point numbers as untrusted     input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used     unsafely. (CVE-2021-3177)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9128 advisory.

  - Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to     remote code execution in certain Python applications that accept floating-point numbers as untrusted     input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used     unsafely. (CVE-2021-3177)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9129 advisory.

  - Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to     remote code execution in certain Python applications that accept floating-point numbers as untrusted     input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used     unsafely. (CVE-2021-3177)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-0860 advisory.

  - In jQuery versions greater than or equal to 1.0.3 and before 3.5.0, passing HTML containing     elements from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods     (i.e. .html(), .append(), and others) may execute untrusted code. This problem is patched in jQuery 3.5.0.
    (CVE-2020-11023)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9117 advisory.

  - BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG     features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed,     but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or     tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-     TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server     environments that combine BIND servers with Active Directory domain controllers. The most likely outcome     of a successful exploitation of the vulnerability is a crash of the named process. However, remote code     execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11,     and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition.
    Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch (CVE-2020-8625)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9113 advisory.

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-9116 advisory.

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-0851 advisory.

  - A Reflected Cross Site Scripting flaw was found in all pki-core 10.x.x versions module from the pki-core     server due to the CA Agent Service not properly sanitizing the certificate request page. An attacker could     inject a specially crafted value that will be executed on the victim's browser. (CVE-2019-10146)

  - A vulnerability was found in all pki-core 10.x.x versions, where the Key Recovery Authority (KRA) Agent     Service did not properly sanitize recovery request search page, enabling a Reflected Cross Site Scripting     (XSS) vulnerability. An attacker could trick an authenticated victim into executing specially crafted     Javascript code. (CVE-2019-10179)

  - A Reflected Cross Site Scripting vulnerability was found in all pki-core 10.x.x versions, where the pki-ca     module from the pki-core server. This flaw is caused by missing sanitization of the GET URL parameters. An     attacker could abuse this flaw to trick an authenticated user into clicking a specially crafted link which     can execute arbitrary code when viewed in a browser. (CVE-2019-10221)

  - pki-core: KRA vulnerable to reflected XSS via the getPk12 page (CVE-2020-1721)

  - A flaw was found in pki-core. An attacker who has successfully compromised a key could use this flaw to     renew the corresponding certificate over and over again, as long as it is not explicitly revoked. The     highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-20179)

  - pki-core: XSS in the certificate search results (CVE-2020-25715)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9112 advisory.

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-0856 advisory.

  - In the Linux kernel 4.14 longterm through 4.14.165 and 4.19 longterm through 4.19.96 (and 5.x before 5.2),     there is a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c,     aka CID-7dc40713618c. This is related to i915_gem_context_destroy_ioctl in     drivers/gpu/drm/i915/i915_gem_context.c. (CVE-2020-7053)

  - In the Linux kernel before 5.3.9, there are multiple out-of-bounds write bugs that can be caused by a     malicious USB device in the Linux kernel HID drivers, aka CID-d9d4b1e46d95. This affects drivers/hid/hid-     axff.c, drivers/hid/hid-dr.c, drivers/hid/hid-emsff.c, drivers/hid/hid-gaff.c, drivers/hid/hid-holtekff.c,     drivers/hid/hid-lg2ff.c, drivers/hid/hid-lg3ff.c, drivers/hid/hid-lg4ff.c, drivers/hid/hid-lgff.c,     drivers/hid/hid-logitech-hidpp.c, drivers/hid/hid-microsoft.c, drivers/hid/hid-sony.c, drivers/hid/hid-     tmff.c, and drivers/hid/hid-zpff.c. (CVE-2019-19532)

  - In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could     overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in     ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.
    (CVE-2020-25211)

  - A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may     be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE     tunnel allowing anyone between the two endpoints to read the traffic unencrypted. The main threat from     this vulnerability is to data confidentiality. (CVE-2020-25645)

  - A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was     using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of     bounds. The highest threat from this vulnerability is to data confidentiality. (CVE-2020-25656)

  - A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13.
    drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
    (CVE-2020-29661)

  - In create_pinctrl of core.c, there is a possible out of bounds read due to a use after free. This could     lead to local information disclosure with no additional execution privileges needed. User interaction is     not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-140550171     (CVE-2020-0427)

  - A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux     kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by     exhausting available memory. The highest threat from this vulnerability is to system availability.
    (CVE-2021-20265)

  - A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem     allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate     privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as     system availability. (CVE-2020-14351)

  - A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows     to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source     port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly     integrity, because software that relies on UDP source port randomization are indirectly affected as well.
    Kernel versions before 5.10 may be vulnerable to this issue. (CVE-2020-25705)

  - In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking     in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal     in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker     has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are     proxied via an attacker-selected backstore. (CVE-2020-28374)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9114 advisory.

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9115 advisory.

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9107 advisory.

  - Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to     remote code execution in certain Python applications that accept floating-point numbers as untrusted     input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used     unsafely. (CVE-2021-3177)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9052 advisory.

  - Linux: error handling issues in blkback's grant mapping (CVE-2021-26930)

  - Linux: backends treating grant mapping errors as bugs (CVE-2021-26931)

  - Linux: grant mapping error handling issues (CVE-2021-26932)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2021-9066 advisory.

  - xterm through Patch #365 allows remote attackers to cause a denial of service (segmentation fault) or     possibly have unspecified other impact via a crafted UTF-8 character sequence. (CVE-2021-27135)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2021-0809 advisory.

  - A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi     Direct) provision discovery requests. It could result in denial of service or other impact (potentially     execution of arbitrary code), for an attacker within radio range. (CVE-2021-27803)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2021-0808 advisory.

  - A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi     Direct) provision discovery requests. It could result in denial of service or other impact (potentially     execution of arbitrary code), for an attacker within radio range. (CVE-2021-27803)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-0793 advisory.

  - .NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112. (CVE-2021-26701)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-0790 advisory.

  - .NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112. (CVE-2021-26701)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9100 advisory.

  - Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to     remote code execution in certain Python applications that accept floating-point numbers as untrusted     input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used     unsafely. (CVE-2021-3177)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-0788 advisory.

  - .NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112. (CVE-2021-26701)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9101 advisory.

  - Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to     remote code execution in certain Python applications that accept floating-point numbers as untrusted     input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used     unsafely. (CVE-2021-3177)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-0744 advisory.

  - Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too     many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file     descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept     new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is     configured, then this lead to an excessive memory usage and cause the system to run out of memory.
    (CVE-2021-22883)

  - Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the     whitelist includes localhost6. When localhost6 is not present in /etc/hosts, it is just an ordinary     domain that is resolved via DNS, i.e., over network. If the attacker controls the victim's DNS server or     can spoof its responses, the DNS rebinding protection can be bypassed by using the localhost6 domain. As     long as the attacker uses the localhost6 domain, they can still apply the attack described in     CVE-2018-7160. (CVE-2021-22884)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-9087 advisory.

  - Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be     exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was     possible to have a file not readable by an unprivileged user to be copied to a mountpoint controlled by     the user, like a removable device. This was introduced in kernel version 4.19 by commit d1d04ef (ovl:
    stack file ops). This was fixed in kernel version 5.8 by commits 56230d9 (ovl: verify permissions in     ovl_path_open()), 48bd024 (ovl: switch to mounter creds in readdir) and 05acefb (ovl: check permission     to open real file). Additionally, commits 130fdbc (ovl: pass correct flags for opening real directory)     and 292f902 (ovl: call secutiry hook in ovl_real_ioctl()) in kernel 5.8 might also be desired or     necessary. These additional commits introduced a regression in overlay mounts within user namespaces which     prevented access to files with ownership outside of the user namespace. This regression was mitigated by     subsequent commit b6650da (ovl: do not fail because of O_NOATIMEi) in kernel 5.11. (CVE-2020-16120)

  - An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
    (CVE-2021-3347)

  - nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-     free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a     certain point during device setup, aka CID-b98e762e3d71. (CVE-2021-3348)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9085 advisory.

  - An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations     often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success     or failure of each one is reported to the backend driver, and the backend driver then loops over the     results, performing follow-up actions based on the success or failure of each operation. Unfortunately,     when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively     implying their success from the success of related batch elements. In other cases, errors resulting from     one batch element lead to further batch elements not being inspected, and hence successful ones to not be     possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are     vulnerable. Linux backends run in HVM / PVH modes are not vulnerable. This affects arch/*/xen/p2m.c and     drivers/xen/gntdev.c. (CVE-2021-26932)

  - In kbd_keycode of keyboard.c, there is a possible out of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no additional execution privileges needed. User     interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-144161459     (CVE-2020-0431)

  - Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be     exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was     possible to have a file not readable by an unprivileged user to be copied to a mountpoint controlled by     the user, like a removable device. This was introduced in kernel version 4.19 by commit d1d04ef (ovl:
    stack file ops). This was fixed in kernel version 5.8 by commits 56230d9 (ovl: verify permissions in     ovl_path_open()), 48bd024 (ovl: switch to mounter creds in readdir) and 05acefb (ovl: check permission     to open real file). Additionally, commits 130fdbc (ovl: pass correct flags for opening real directory)     and 292f902 (ovl: call secutiry hook in ovl_real_ioctl()) in kernel 5.8 might also be desired or     necessary. These additional commits introduced a regression in overlay mounts within user namespaces which     prevented access to files with ownership outside of the user namespace. This regression was mitigated by     subsequent commit b6650da (ovl: do not fail because of O_NOATIMEi) in kernel 5.11. (CVE-2020-16120)

  - An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
    (CVE-2021-3347)

  - nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-     free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a     certain point during device setup, aka CID-b98e762e3d71. (CVE-2021-3348)

  - An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to     the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be     encountered. In one case, an error encountered earlier might be discarded by later processing, resulting     in the caller assuming successful mapping, and hence subsequent operations trying to access space that     wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery     from the error. This affects drivers/block/xen-blkback/blkback.c. (CVE-2021-26930)

  - An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI     backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially     being at least under the influence of guests (such as out of memory conditions), it isn't correct to     assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running     in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.
    (CVE-2021-26931)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9086 advisory.

  - An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations     often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success     or failure of each one is reported to the backend driver, and the backend driver then loops over the     results, performing follow-up actions based on the success or failure of each operation. Unfortunately,     when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively     implying their success from the success of related batch elements. In other cases, errors resulting from     one batch element lead to further batch elements not being inspected, and hence successful ones to not be     possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are     vulnerable. Linux backends run in HVM / PVH modes are not vulnerable. This affects arch/*/xen/p2m.c and     drivers/xen/gntdev.c. (CVE-2021-26932)

  - In kbd_keycode of keyboard.c, there is a possible out of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no additional execution privileges needed. User     interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-144161459     (CVE-2020-0431)

  - Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be     exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was     possible to have a file not readable by an unprivileged user to be copied to a mountpoint controlled by     the user, like a removable device. This was introduced in kernel version 4.19 by commit d1d04ef (ovl:
    stack file ops). This was fixed in kernel version 5.8 by commits 56230d9 (ovl: verify permissions in     ovl_path_open()), 48bd024 (ovl: switch to mounter creds in readdir) and 05acefb (ovl: check permission     to open real file). Additionally, commits 130fdbc (ovl: pass correct flags for opening real directory)     and 292f902 (ovl: call secutiry hook in ovl_real_ioctl()) in kernel 5.8 might also be desired or     necessary. These additional commits introduced a regression in overlay mounts within user namespaces which     prevented access to files with ownership outside of the user namespace. This regression was mitigated by     subsequent commit b6650da (ovl: do not fail because of O_NOATIMEi) in kernel 5.11. (CVE-2020-16120)

  - An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
    (CVE-2021-3347)

  - An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to     the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be     encountered. In one case, an error encountered earlier might be discarded by later processing, resulting     in the caller assuming successful mapping, and hence subsequent operations trying to access space that     wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery     from the error. This affects drivers/block/xen-blkback/blkback.c. (CVE-2021-26930)

  - An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI     backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially     being at least under the influence of guests (such as out of memory conditions), it isn't correct to     assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running     in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.
    (CVE-2021-26931)

  - nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-     free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a     certain point during device setup, aka CID-b98e762e3d71. (CVE-2021-3348)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9084 advisory.

  - Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be     exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was     possible to have a file not readable by an unprivileged user to be copied to a mountpoint controlled by     the user, like a removable device. This was introduced in kernel version 4.19 by commit d1d04ef (ovl:
    stack file ops). This was fixed in kernel version 5.8 by commits 56230d9 (ovl: verify permissions in     ovl_path_open()), 48bd024 (ovl: switch to mounter creds in readdir) and 05acefb (ovl: check permission     to open real file). Additionally, commits 130fdbc (ovl: pass correct flags for opening real directory)     and 292f902 (ovl: call secutiry hook in ovl_real_ioctl()) in kernel 5.8 might also be desired or     necessary. These additional commits introduced a regression in overlay mounts within user namespaces which     prevented access to files with ownership outside of the user namespace. This regression was mitigated by     subsequent commit b6650da (ovl: do not fail because of O_NOATIMEi) in kernel 5.11. (CVE-2020-16120)

  - An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
    (CVE-2021-3347)

  - nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-     free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a     certain point during device setup, aka CID-b98e762e3d71. (CVE-2021-3348)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2021-0742 advisory.

  - encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write     access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character     sequence. (CVE-2021-26937)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-0706 advisory.

  - A flaw was found in podman before 1.7.0. File permissions for non-root users running in a privileged     container are not correctly checked. This flaw can be abused by a low-privileged user inside the container     to access any other file in the container, even if owned by the root user inside the container. It does     not allow to directly escape the container, though being a privileged container means that a lot of     security features are disabled when running the container. The highest threat from this vulnerability is     to data confidentiality and integrity as well as system availability. (CVE-2021-20188)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Severity
148446	Oracle Linux 7 : squid (ELSA-2021-1135)	medium
148423	Oracle Linux 8 : 389-ds:1.4 (ELSA-2021-1086)	medium
148421	Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2021-1064)	low
148398	Oracle Linux 7 : nettle (ELSA-2021-1145)	high
148383	Oracle Linux 7 : openssl (ELSA-2021-9121)	medium
148382	Oracle Linux 7 : libldb (ELSA-2021-1072)	medium
148380	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9164)	high
148371	Oracle Linux 8 : kernel (ELSA-2021-1093)	high
148359	Oracle Linux 8 : flatpak (ELSA-2021-1068)	medium
148343	Oracle Linux 7 : kernel (ELSA-2021-1071)	medium
148259	Oracle Linux 8 : openssl (ELSA-2021-9151)	medium
148258	Oracle Linux 6 : openssl (ELSA-2021-9150)	medium
148219	Oracle Linux 7 : flatpak (ELSA-2021-1002)	medium
148183	Oracle Linux 8 : firefox (ELSA-2021-0990)	medium
148181	Oracle Linux 8 : thunderbird (ELSA-2021-0993)	medium
148134	Oracle Linux 7 : thunderbird (ELSA-2021-0996)	medium
148133	Oracle Linux 6 : openssl (ELSA-2021-9137)	medium
148127	Oracle Linux 7 : firefox (ELSA-2021-0992)	medium
148088	Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9136)	medium
148036	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9135)	medium
148035	Oracle Linux 8 : pki-core:10.6 (ELSA-2021-0966)	medium
147967	Oracle Linux 8 : python38 (ELSA-2021-9130)	high
147966	Oracle Linux 8 : python2 (ELSA-2021-9128)	high
147965	Oracle Linux 8 : python36 (ELSA-2021-9129)	high
147888	Oracle Linux 7 : ipa (ELSA-2021-0860)	medium
147869	Oracle Linux 6 : bind (ELSA-2021-9117)	medium
147865	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9113)	medium
147864	Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9116)	medium
147863	Oracle Linux 7 : pki-core (ELSA-2021-0851)	medium
147862	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9112)	medium
147861	Oracle Linux 7 : kernel (ELSA-2021-0856)	high
147840	Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9114)	medium
147839	Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9115)	medium
147811	Oracle Linux 7 : python (ELSA-2021-9107)	high
147804	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9052)	medium
147767	Oracle Linux 6 : xterm (ELSA-2021-9066)	high
147712	Oracle Linux 8 : SUMM: / wpa_supplicant (ELSA-2021-0809)	medium
147656	Oracle Linux 7 : wpa_supplicant (ELSA-2021-0808)	medium
147655	Oracle Linux 8 : .NET / Core / on / OL / 8 (ELSA-2021-0793)	high
147646	Oracle Linux 8 : SUMM: / dotnet3.1 (ELSA-2021-0790)	high
147642	Oracle Linux 8 : python3 (ELSA-2021-9100)	high
147641	Oracle Linux 8 : SUMM: / dotnet (ELSA-2021-0788)	high
147621	Oracle Linux 7 : python3 (ELSA-2021-9101)	high
147213	Oracle Linux 8 : SUMM: / nodejs:14 (ELSA-2021-0744)	medium
147205	Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9087)	high
147204	Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9085)	high
147203	Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9086)	high
147202	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9084)	high
147195	Oracle Linux 7 : screen (ELSA-2021-0742)	high
147170	Oracle Linux 8 : SUMM: / container-tools:2.0 (ELSA-2021-0706)	medium

Oracle Linux Local Security Checks Family for Nessus

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