The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:3217 advisory.

  - kernel: MIDI driver race condition leads to a double-free (CVE-2018-10902)

  - kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)

  - kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS     (CVE-2019-11810)

  - kernel: brcmfmac heap buffer overflow in brcmf_wowl_nd_results (CVE-2019-9500)

  - hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)

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

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2017-18595: A double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (bnc#1149555).

CVE-2019-14821: An out-of-bounds access issue was found in the way Linux kernel's KVM hypervisor implements the coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system (bnc#1151350).

CVE-2019-15291: There was a NULL pointer dereference caused by a malicious USB device in the flexcop_usb_probe function in the drivers/media/usb/b2c2/flexcop-usb.c driver (bnc#1146540).

CVE-2019-9506: The Bluetooth BR/EDR specification up to and including version 5.1 permitted sufficiently low encryption key length and did not prevent an attacker from influencing the key length negotiation.
This allowed practical brute-force attacks (aka 'KNOB') that could decrypt traffic and injected arbitrary ciphertext without the victim noticing (bnc#1137865 bnc#1146042).

CVE-2019-16232: Fixed a NULL pointer dereference in drivers/net/wireless/marvell/libertas/if_sdio.c, which did not check the alloc_workqueue return value (bnc#1150465).

CVE-2019-16234: Fixed a NULL pointer dereference in drivers/net/wireless/intel/iwlwifi/pcie/trans.c, which did not check the alloc_workqueue return value (bnc#1150452).

CVE-2019-17056: Added enforcement of CAP_NET_RAW in llcp_sock_create in net/nfc/llcp_sock.c in the AF_NFC network module, the lack of which allowed unprivileged users to create a raw socket, aka CID-3a359798b176 (bnc#1152788).

CVE-2019-17133: Fixed a buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c caused by long SSID IEs (bsc#1153158).

CVE-2019-17666: Added an upper-bound check in rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c, the lack of which could have led to a buffer overflow (bnc#1154372).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for kernel is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)

* kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c (CVE-2019-3846)

* hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)

* kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net /wireless/marvell/mwifiex/ie.c (CVE-2019-10126)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fixes :

* gfs2: Fix iomap write page reclaim deadlock (BZ#1737373)

* [FJ7.6 Bug]: [REG] kernel: ipc: ipc_free should use kvfree (BZ#1740178)

* high update_cfs_rq_blocked_load contention (BZ#1740180)

* [Hyper-V][RHEL 7] kdump fails to start on a Hyper-V guest of Windows Server 2019. (BZ#1740188)

* kvm: backport cpuidle-haltpoll driver (BZ#1740192)

* Growing unreclaimable slab memory (BZ#1741920)

* [bnx2x] ping failed from pf to vf which has been attached to vm (BZ# 1741926)

* [Hyper-V]vPCI devices cannot allocate IRQs vectors in a Hyper-V VM with > 240 vCPUs (i.e., when in x2APIC mode) (BZ#1743324)

* Macsec: inbound MACSEC frame is unexpectedly dropped with InPktsNotValid (BZ#1744442)

* RHEL 7.7 Beta - Hit error when trying to run nvme connect with IPv6 address (BZ#1744443)

* RHEL 7.6 SS4 - Paths lost when running straight I/O on NVMe/RoCE system (BZ #1744444)

* NFSv4.0 client sending a double CLOSE (leading to EIO application failure) (BZ#1744946)

* [Azure] CRI-RDOS | [RHEL 7.8] Live migration only takes 10 seconds, but the VM was unavailable for 2 hours (BZ#1748239)

* NFS client autodisconnect timer may fire immediately after TCP connection setup and may cause DoS type reconnect problem in complex network environments (BZ#1749290)

* [Inspur] RHEL7.6 ASPEED graphic card display issue (BZ#1749296)

* Allows macvlan to operated correctly over the active-backup mode to support bonding events. (BZ#1751579)

* [LLNL 7.5 Bug] slab leak causing a crash when using kmem control group (BZ# 1752421)

Users of kernel are advised to upgrade to these updated packages, which fix these bugs.

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es) :

* kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)

* kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c (CVE-2019-3846)

* hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)

* kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net /wireless/marvell/mwifiex/ie.c (CVE-2019-10126)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es) :

* kernel-rt: update to the RHEL7.7.z batch#2 source tree (BZ#1748570)

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-15291: There was a NULL pointer dereference, caused by a malicious USB device in the flexcop_usb_probe function in the drivers/media/usb/b2c2/flexcop-usb.c driver (bnc#1146540).

CVE-2019-14821: An out-of-bounds access issue was found in the way the KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system (bnc#1151350).

CVE-2017-18595: A double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (bnc#1149555).

CVE-2019-9506: The Bluetooth BR/EDR specification up to and including version 5.1 permitted sufficiently low encryption key length and did not prevent an attacker from influencing the key length negotiation.
This allowed practical brute-force attacks (aka 'KNOB') that could decrypt traffic and injected arbitrary ciphertext without the victim noticing (bnc#1137865 bnc#1146042).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Security Fix(es) :

  - kernel: Use-after-free in __blk_drain_queue() function     in block/blk-core.c (CVE-2018-20856)

  - kernel: Heap overflow in mwifiex_update_bss_desc_with_ie     function in marvell/mwifiex/scan.c (CVE-2019-3846)

  - hardware: bluetooth: BR/EDR encryption key negotiation     attacks (KNOB) (CVE-2019-9506)

  - kernel: Heap overflow in mwifiex_uap_parse_tail_ies     function in drivers/net/wireless/marvell/mwifiex/ie.c     (CVE-2019-10126)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fixes :

  - gfs2: Fix iomap write page reclaim deadlock (BZ#1737373)

  - [FJ7.6 Bug]: [REG] kernel: ipc: ipc_free should use     kvfree (BZ#1740178)

  - high update_cfs_rq_blocked_load contention (BZ#1740180)

  - [Hyper-V][RHEL 7] kdump fails to start on a Hyper-V     guest of Windows Server 2019. (BZ#1740188)

  - kvm: backport cpuidle-haltpoll driver (BZ#1740192)

  - Growing unreclaimable slab memory (BZ#1741920)

  - [bnx2x] ping failed from pf to vf which has been     attached to vm (BZ#1741926)

  - [Hyper-V]vPCI devices cannot allocate IRQs vectors in a     Hyper-V VM with > 240 vCPUs (i.e., when in x2APIC mode)     (BZ#1743324)

  - Macsec: inbound MACSEC frame is unexpectedly dropped     with InPktsNotValid (BZ#1744442)

  - RHEL 7.7 Beta - Hit error when trying to run nvme     connect with IPv6 address (BZ#1744443)

  - RHEL 7.6 SS4 - Paths lost when running straight I/O on     NVMe/RoCE system (BZ#1744444)

  - NFSv4.0 client sending a double CLOSE (leading to EIO     application failure) (BZ#1744946)

  - [Azure] CRI-RDOS | [RHEL 7.8] Live migration only takes     10 seconds, but the VM was unavailable for 2 hours     (BZ#1748239)

  - NFS client autodisconnect timer may fire immediately     after TCP connection setup and may cause DoS type     reconnect problem in complex network environments     (BZ#1749290)

  - [Inspur] RHEL7.6 ASPEED graphic card display issue     (BZ#1749296)

  - Allows macvlan to operated correctly over the     active-backup mode to support bonding events.
    (BZ#1751579)

  - [LLNL 7.5 Bug] slab leak causing a crash when using kmem     control group (BZ#1752421)

Users of kernel are advised to upgrade to these updated packages, which fix these bugs.

The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2017-18595: A double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (bnc#1149555).

CVE-2019-14821: An out-of-bounds access issue was found in the way Linux kernel's KVM hypervisor implements the coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system (bnc#1151350).

CVE-2019-15291: There was a NULL pointer dereference caused by a malicious USB device in the flexcop_usb_probe function in the drivers/media/usb/b2c2/flexcop-usb.c driver (bnc#1146540).

CVE-2019-9506: The Bluetooth BR/EDR specification up to and including version 5.1 permitted sufficiently low encryption key length and did not prevent an attacker from influencing the key length negotiation.
This allowed practical brute-force attacks (aka 'KNOB') that could decrypt traffic and injected arbitrary ciphertext without the victim noticing (bnc#1137865 bnc#1146042).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Windows host is missing security update 4512517.
It is, therefore, affected by multiple vulnerabilities :

  - An elevation of privilege vulnerability exists when     Windows improperly handles calls to Advanced Local     Procedure Call (ALPC). An attacker who successfully     exploited this vulnerability could run arbitrary code in     the security context of the local system. An attacker     could then install programs; view, change, or delete     data; or create new accounts with full user rights.
    (CVE-2019-1162)

  - A security feature bypass vulnerability exists when     Microsoft browsers improperly handle requests of     different origins. The vulnerability allows Microsoft     browsers to bypass Same-Origin Policy (SOP)     restrictions, and to allow requests that should     otherwise be ignored. An attacker who successfully     exploited the vulnerability could force the browser to     send data that would otherwise be restricted.
    (CVE-2019-1192)

  - An information disclosure vulnerability exists when the     Microsoft Windows Graphics Component improperly handles     objects in memory. An attacker who successfully     exploited the vulnerability could obtain information to     further compromise the users system.  (CVE-2019-1148,     CVE-2019-1153)

  - A denial of service vulnerability exists when the     XmlLite runtime (XmlLite.dll) improperly parses XML     input. An attacker who successfully exploited this     vulnerability could cause a denial of service against an     XML application. A remote unauthenticated attacker could     exploit this vulnerability by issuing specially crafted     requests to an XML application. The update addresses the     vulnerability by correcting how the XmlLite runtime     parses XML input. (CVE-2019-1187)

  - An elevation of privilege vulnerability exists when     DirectX improperly handles objects in memory. An     attacker who successfully exploited this vulnerability     could run arbitrary code in kernel mode. An attacker     could then install programs; view, change, or delete     data; or create new accounts with full user rights.
    (CVE-2019-1176)

  - A remote code execution vulnerability exists when the     Windows Jet Database Engine improperly handles objects     in memory. An attacker who successfully exploited this     vulnerability could execute arbitrary code on a victim     system. An attacker could exploit this vulnerability by     enticing a victim to open a specially crafted file. The     update addresses the vulnerability by correcting the way     the Windows Jet Database Engine handles objects in     memory. (CVE-2019-1146, CVE-2019-1147, CVE-2019-1155,     CVE-2019-1156, CVE-2019-1157)

  - A denial of service vulnerability exists in the HTTP/2     protocol stack (HTTP.sys) when HTTP.sys improperly     parses specially crafted HTTP/2 requests. An attacker     who successfully exploited the vulnerability could     create a denial of service condition, causing the target     system to become unresponsive.  (CVE-2019-9511,     CVE-2019-9512, CVE-2019-9513, CVE-2019-9514,     CVE-2019-9518)

  - <h1>Executive Summary</h1> Microsoft is aware of the     Bluetooth BR/EDR (basic rate/enhanced data rate, known     as &quot;Bluetooth Classic&quot;) key negotiation     vulnerability that exists at the hardware specification     level of any BR/EDR Bluetooth device. An attacker could     potentially be able to negotiate the offered key length     down to 1 byte of entropy, from a maximum of 16 bytes.
    (CVE-2019-9506)

  - A remote code execution vulnerability exists in the way     that the Chakra scripting engine handles objects in     memory in Microsoft Edge. The vulnerability could     corrupt memory in such a way that an attacker could     execute arbitrary code in the context of the current     user. An attacker who successfully exploited the     vulnerability could gain the same user rights as the     current user.  (CVE-2019-1139, CVE-2019-1140,     CVE-2019-1195, CVE-2019-1197)

  - An elevation of privilege exists in the p2pimsvc service     where an attacker who successfully exploited the     vulnerability could run arbitrary code with elevated     privileges.  (CVE-2019-1168)

  - An information disclosure vulnerability exists when the     Windows Graphics component improperly handles objects in     memory. An attacker who successfully exploited this     vulnerability could obtain information to further     compromise the users system. An authenticated attacker     could exploit this vulnerability by running a specially     crafted application. The update addresses the     vulnerability by correcting how the Windows Graphics     Component handles objects in memory. (CVE-2019-1078)

  - An elevation of privilege vulnerability exists in the     way that the wcmsvc.dll handles objects in memory. An     attacker who successfully exploited the vulnerability     could execute code with elevated permissions.
    (CVE-2019-1180, CVE-2019-1186)

  - A memory corruption vulnerability exists in the Windows     Server DHCP service when an attacker sends specially     crafted packets to a DHCP failover server. An attacker     who successfully exploited the vulnerability could cause     the DHCP service to become nonresponsive.
    (CVE-2019-1206)

  - An elevation of privilege vulnerability exists in the     way that the unistore.dll handles objects in memory. An     attacker who successfully exploited the vulnerability     could execute code with elevated permissions.
    (CVE-2019-1179)

  - An elevation of privilege exists in SyncController.dll.
    An attacker who successfully exploited the vulnerability     could run arbitrary code with elevated privileges.
    (CVE-2019-1198)

  - An elevation of privilege vulnerability exists in the     way that the ssdpsrv.dll handles objects in memory. An     attacker who successfully exploited the vulnerability     could execute code with elevated permissions.
    (CVE-2019-1178)

  - A remote code execution vulnerability exists when the     Windows font library improperly handles specially     crafted embedded fonts. An attacker who successfully     exploited the vulnerability could take control of the     affected system. An attacker could then install     programs; view, change, or delete data; or create new     accounts with full user rights.  (CVE-2019-1144,     CVE-2019-1145, CVE-2019-1149, CVE-2019-1150,     CVE-2019-1151, CVE-2019-1152)

  - A security feature bypass exists when Windows     incorrectly validates CAB file signatures. An attacker     who successfully exploited this vulnerability could     inject code into a CAB file without invalidating the     file's signature.  (CVE-2019-1163)

  - An elevation of privilege vulnerability exists when the     Windows kernel fails to properly handle objects in     memory. An attacker who successfully exploited this     vulnerability could run arbitrary code in kernel mode.
    An attacker could then install programs; view, change,     or delete data; or create new accounts with full user     rights.  (CVE-2019-1159, CVE-2019-1164)

  - A remote code execution vulnerability exists in Remote     Desktop Services formerly known as Terminal Services     when an unauthenticated attacker connects to the target     system using RDP and sends specially crafted requests.
    This vulnerability is pre-authentication and requires no     user interaction. An attacker who successfully exploited     this vulnerability could execute arbitrary code on the     target system. An attacker could then install programs;
    view, change, or delete data; or create new accounts     with full user rights.  (CVE-2019-1181, CVE-2019-1182)

  - A memory corruption vulnerability exists in the Windows     DHCP client when an attacker sends specially crafted     DHCP responses to a client. An attacker who successfully     exploited the vulnerability could run arbitrary code on     the client machine.  (CVE-2019-0736)

  - A remote code execution vulnerability exists in the way     that the scripting engine handles objects in memory in     Internet Explorer. The vulnerability could corrupt     memory in such a way that an attacker could execute     arbitrary code in the context of the current user. An     attacker who successfully exploited the vulnerability     could gain the same user rights as the current user.
    (CVE-2019-1133, CVE-2019-1194)

  - A remote code execution vulnerability exists in the way     that the VBScript engine handles objects in memory. The     vulnerability could corrupt memory in such a way that an     attacker could execute arbitrary code in the context of     the current user. An attacker who successfully exploited     the vulnerability could gain the same user rights as the     current user.  (CVE-2019-1183)

  - An elevation of privilege vulnerability exists in the     way that the rpcss.dll handles objects in memory. An     attacker who successfully exploited the vulnerability     could execute code with elevated permissions.
    (CVE-2019-1177)

  - A remote code execution vulnerability exists in the way     that Microsoft browsers access objects in memory. The     vulnerability could corrupt memory in a way that could     allow an attacker to execute arbitrary code in the     context of the current user. An attacker who     successfully exploited the vulnerability could gain the     same user rights as the current user.  (CVE-2019-1193)

  - An information disclosure vulnerability exists when     Microsoft Edge improperly handles objects in memory. An     attacker who successfully exploited the vulnerability     could obtain information to further compromise the users     system.  (CVE-2019-1030)

  - An information disclosure vulnerability exists in Azure     Active Directory (AAD) Microsoft Account (MSA) during     the login request session. An attacker who successfully     exploited the vulnerability could take over a user's     account.  (CVE-2019-1172)

  - A denial of service vulnerability exists when Microsoft     Hyper-V Network Switch on a host server fails to     properly validate input from a privileged user on a     guest operating system. An attacker who successfully     exploited the vulnerability could cause the host server     to crash.  (CVE-2019-0714, CVE-2019-0715, CVE-2019-0718,     CVE-2019-0723)

  - A denial of service vulnerability exists when Windows     improperly handles objects in memory. An attacker who     successfully exploited the vulnerability could cause a     target system to stop responding.  (CVE-2019-0716)

  - An information disclosure vulnerability exists when the     Windows GDI component improperly discloses the contents     of its memory. An attacker who successfully exploited     the vulnerability could obtain information to further     compromise a users system. There are multiple ways an     attacker could exploit the vulnerability, such as by     convincing a user to open a specially crafted document     or by convincing a user to visit an untrusted webpage.
    The update addresses the vulnerability by correcting how     the Windows GDI component handles objects in memory.
    (CVE-2019-1143, CVE-2019-1158)

  - A remote code execution vulnerability exists when     Windows Hyper-V Network Switch on a host server fails to     properly validate input from an authenticated user on a     guest operating system.  (CVE-2019-0720)

  - A memory corruption vulnerability exists in the Windows     Server DHCP service when processing specially crafted     packets. An attacker who successfully exploited the     vulnerability could cause the DHCP server service to     stop responding.  (CVE-2019-1212)

  - A remote code execution vulnerability exists when the     Microsoft XML Core Services MSXML parser processes user     input. An attacker who successfully exploited the     vulnerability could run malicious code remotely to take     control of the users system.  (CVE-2019-1057)

ID	Name	Product	Family	Published	Updated	Severity
130373	RHEL 7 : kernel-alt (RHSA-2019:3217)	Nessus	Red Hat Local Security Checks	10/30/2019	4/16/2024	high
130452	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:2879-1)	Nessus	SuSE Local Security Checks	11/1/2019	4/16/2024	critical
129958	RHEL 7 : kernel (RHSA-2019:3055)	Nessus	Red Hat Local Security Checks	10/16/2019	4/18/2024	critical
129992	RHEL 7 : kernel-rt (RHSA-2019:3089)	Nessus	Red Hat Local Security Checks	10/17/2019	4/18/2024	critical
130050	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:2706-1)	Nessus	SuSE Local Security Checks	10/18/2019	4/17/2024	high
130078	Scientific Linux Security Update : kernel on SL7.x x86_64 (20191016)	Nessus	Scientific Linux Local Security Checks	10/21/2019	4/17/2024	critical
130089	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:2710-1)	Nessus	SuSE Local Security Checks	10/21/2019	4/17/2024	high
127850	KB4512517: Windows 10 Version 1607 and Windows Server 2016 August 2019 Security Update	Nessus	Windows : Microsoft Bulletins	8/13/2019	2/10/2023	critical

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