The remote Redhat Enterprise Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2472 advisory.

    This release adds the new Apache HTTP Server 2.4.37 Service Pack 8 packages that are part of the JBoss     Core Services offering.

    This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service     Pack 7 and includes bug fixes and enhancements. Refer to the Release Notes for information on the most     significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * curl: Use-after-free in TLS session handling when using OpenSSL TLS backend (CVE-2021-22901)

    * httpd: NULL pointer dereference on specially crafted HTTP/2 request (CVE-2021-31618)

    * libcurl: partial password leak over DNS on HTTP redirect (CVE-2020-8169)

    * curl: FTP PASV command response can cause curl to connect to arbitrary host (CVE-2020-8284)

    * curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used     (CVE-2020-8285)

    * curl: Inferior OCSP verification (CVE-2020-8286)

    * curl: Leak of authentication credentials in URL via automatic Referer (CVE-2021-22876)

    * curl: TLS 1.3 session ticket mix-up with HTTPS proxy host (CVE-2021-22890)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017535 advisory.

    curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a     connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl     can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote     server and then wrongly short-cut the host handshake. When confusing the tickets, a HTTPS proxy can     trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS     certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious     HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to     work - unless curl has been told to ignore the server certificate check.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

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

Daniel Stenberg reports :

Enabled by default, libcurl supports the use of TLS 1.3 session tickets to resume previous TLS sessions to speed up subsequent TLS handshakes.

When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly 'short-cut' the host handshake. The reason for this confusion is the modified sequence from TLS 1.2 when the session ids would provided only during the TLS handshake, while in TLS 1.3 it happens post hand-shake and the code was not updated to take that changed behavior into account.

When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed.

This flaw can allow a malicious HTTPS proxy to MITM the traffic. Such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.

According to the versions of the curl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the way libcurl handled TLS 1.3     session tickets. A malicious HTTPS proxy could possibly     use this flaw to make libcurl resume a TLS session it     previously had with the proxy while intending to resume     a TLS session with a target server, making it possible     for the proxy to perform a man-in-the-middle     attack.(CVE-2021-22890)

  - It was discovered that libcurl did not remove     authentication credentials from URLs when automatically     populating the Referer HTTP request header while     handling HTTP redirects. This could lead to exposure of     the credentials to the server to which requests were     redirected.(CVE-2021-22876)

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

The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the SVD-2023-0613 advisory.

  - A prototype pollution vulnerability exists in the function copy in dom.js in the xmldom (published as     @xmldom/xmldom) package before 0.8.3 for Node.js via the p variable. NOTE: the vendor states we are in     the process of marking this report as invalid; however, some third parties takes the position that A     prototype injection/Prototype pollution is not just when global objects are polluted with recursive merge     or deep cloning but also when a target object is polluted. (CVE-2022-37616)

  - When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by     finalizing the operation with a rename from a temporary name to the final target file name.In that rename     operation, it might accidentally *widen* the permissions for the target file, leaving the updated file     accessible to more users than intended. (CVE-2022-32207)

  - An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the     XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to     access an array at a negative 2GB offset, typically leading to a segmentation fault. (CVE-2022-40303)

  - An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a     hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be     provoked. (CVE-2022-40304)

  - There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName.
    X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME     incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently     interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL     checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may     allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or     enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate     chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these     inputs, the other input must already contain an X.400 address as a CRL distribution point, which is     uncommon. As such, this vulnerability is most likely to only affect applications which have implemented     their own functionality for retrieving CRLs over a network. (CVE-2023-0286)

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

The remote Fedora 33 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-cab5c9befb advisory.

  - curl 7.1.1 to and including 7.75.0 is vulnerable to an Exposure of Private Personal Information to an     Unauthorized Actor by leaking credentials in the HTTP Referer: header. libcurl does not strip off user     credentials from the URL when automatically populating the Referer: HTTP request header field in outgoing     HTTP requests, and therefore risks leaking sensitive data to the server that is the target of the second     HTTP request. (CVE-2021-22876)

  - curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a     connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl     can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote     server and then wrongly short-cut the host handshake. When confusing the tickets, a HTTPS proxy can     trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS     certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious     HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to     work - unless curl has been told to ignore the server certificate check. (CVE-2021-22890)

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

This update for curl fixes the following issues :

CVE-2021-22890: TLS 1.3 session ticket proxy host mixup (bsc#1183934)

CVE-2021-22876: Automatic referer leaks credentials (bsc#1183933)

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.

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - curl 7.63.0 to and including 7.75.0 includes     vulnerability that allows a malicious HTTPS proxy to     MITM a connection due to bad handling of TLS 1.3     session tickets. When using a HTTPS proxy and TLS 1.3,     libcurl can confuse session tickets arriving from the     HTTPS proxy but work as if they arrived from the remote     server and then wrongly(CVE-2021-22890)

  - curl 7.1.1 to and including 7.75.0 is vulnerable to an     'Exposure of Private Personal Information to an     Unauthorized Actor' by leaking credentials in the HTTP     Referer: header. libcurl does not strip off user     credentials from the URL when automatically populating     the Referer: HTTP request header field in outgoing HTTP     requests, and therefore risks leaking sensitive data to     the server that is the target of the second HTTP     request.(CVE-2021-22876)

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

The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the SVD-2023-0808 advisory.

  - The go command may execute arbitrary code at build time when using cgo. This may occur when running go     get on a malicious module, or when running any other command which builds untrusted code. This is can by     triggered by linker flags, specified via a #cgo LDFLAGS directive. Flags containing embedded spaces are     mishandled, allowing disallowed flags to be smuggled through the LDFLAGS sanitization by including them in     the argument of another flag. This only affects usage of the gccgo compiler. (CVE-2023-29405)

  - When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by     finalizing the operation with a rename from a temporary name to the final target file name.In that rename     operation, it might accidentally *widen* the permissions for the target file, leaving the updated file     accessible to more users than intended. (CVE-2022-32207)

  - decode-uri-component 0.2.0 is vulnerable to Improper Input Validation resulting in DoS. (CVE-2022-38900)

  - The got package before 12.1.0 (also fixed in 11.8.5) for Node.js allows a redirect to a UNIX socket.
    (CVE-2022-33987)

  - Prototype pollution vulnerability in function parseQuery in parseQuery.js in webpack loader-utils via the     name variable in parseQuery.js. This affects all versions prior to 1.4.1 and 2.0.3. (CVE-2022-37601)

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

ID	Name	Product	Family	Published	Updated	Severity
150852	RHEL 7 / 8 : Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP8 (RHSA-2021:2472)	Nessus	Red Hat Local Security Checks	6/17/2021	5/8/2026	high
314015	Unity Linux 20.1060e / 20.1070e Security Update: curl (UTSA-2026-017535)	Nessus	Unity Linux Local Security Checks	5/11/2026	5/11/2026	low
148517	FreeBSD : curl -- TLS 1.3 session ticket proxy host mixup (d10fc771-958f-11eb-9c34-080027f515ea)	Nessus	FreeBSD Local Security Checks	4/14/2021	1/4/2024	low
150263	EulerOS Virtualization 2.9.1 : curl (EulerOS-SA-2021-1962)	Nessus	Huawei Local Security Checks	6/4/2021	12/27/2023	medium
194919	Splunk Enterprise < 8.1.14, 8.2.0 < 8.2.11, 9.0.0 < 9.0.5 (SVD-2023-0613)	Nessus	CGI abuses	5/2/2024	7/26/2024	critical
194927	Universal Forwarders < 8.1.14, 8.2.0 < 8.2.11, 9.0.0 < 9.0.5 (SVD-2023-0614)	Nessus	CGI abuses	5/2/2024	5/30/2024	critical
148779	Fedora 33 : curl (2021-cab5c9befb)	Nessus	Fedora Local Security Checks	4/19/2021	1/3/2024	medium
148299	SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2021:1006-1)	Nessus	SuSE Local Security Checks	4/2/2021	1/5/2024	medium
151255	EulerOS 2.0 SP9 : curl (EulerOS-SA-2021-2060)	Nessus	Huawei Local Security Checks	7/1/2021	12/11/2023	medium
194928	Splunk Enterprise 8.2.0 < 8.2.12, 9.0.0 < 9.0.6, 9.1.0 < 9.1.1 (SVD-2023-0808)	Nessus	CGI abuses	5/2/2024	7/29/2024	critical
194926	Universal Forwarder 8.2.0 < 8.2.12, 9.0.0 < 9.0.6, 9.1.0 < 9.1.1 (SVD-2023-0809)	Nessus	CGI abuses	5/2/2024	5/30/2024	critical

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