The remote host is affected by the vulnerability described in GLSA-202407-21 (X.Org X11 library: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in X.Org X11 library. Please review the CVE identifiers     referenced below for details.

Tenable has extracted the preceding description block directly from the Gentoo 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 remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2145 advisory.

    The libX11 packages contain the core X11 protocol client library.

    Security Fix(es):

    * libX11: out-of-bounds memory access in _XkbReadKeySyms() (CVE-2023-43785)

    * libX11: stack exhaustion from infinite recursion in PutSubImage() (CVE-2023-43786)

    * libX11: integer overflow in XCreateImage() leading to a heap overflow (CVE-2023-43787)

    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.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.4 Release Notes     linked from 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 remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6408-1 advisory.

    Yair Mizrahi discovered that libXpm incorrectly handled certain malformed XPM image files. If a user were     tricked into opening a specially crafted XPM image file, a remote attacker could possibly use this issue     to consume memory, leading to a denial of service. (CVE-2023-43786)

    Yair Mizrahi discovered that libXpm incorrectly handled certain malformed XPM image files. If a user were     tricked into opening a specially crafted XPM image file, a remote attacker could use this issue to cause     libXpm to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2023-43787)

    Alan Coopersmith discovered that libXpm incorrectly handled certain malformed XPM image files. If a user     were tricked into opening a specially crafted XPM image file, a remote attacker could possibly use this     issue to cause libXpm to crash, leading to a denial of service. (CVE-2023-43788, CVE-2023-43789)

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

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

According to the versions of the libX11 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function.
    This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on     the system. (CVE-2023-43785)

  - A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw     allows a local user to consume all available system resources and cause a denial of service condition.
    (CVE-2023-43786)

  - A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This     flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated     privileges. (CVE-2023-43787)

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.

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

  - A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw     allows a local user to consume all available system resources and cause a denial of service condition.
    (CVE-2023-43786)

  - A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This     flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated     privileges. (CVE-2023-43787)

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.

According to the versions of the libX11 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function.
    This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on     the system. (CVE-2023-43785)

  - A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw     allows a local user to consume all available system resources and cause a denial of service condition.
    (CVE-2023-43786)

  - A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This     flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated     privileges. (CVE-2023-43787)

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.

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

  - A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw     allows a local user to consume all available system resources and cause a denial of service condition.
    (CVE-2023-43786)

  - A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This     flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated     privileges. (CVE-2023-43787)

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.

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

  - A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw     allows a local user to consume all available system resources and cause a denial of service condition.
    (CVE-2023-43786)

  - A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This     flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated     privileges. (CVE-2023-43787)

  - A vulnerability was found in libXpm due to a boundary condition within the XpmCreateXpmImageFromBuffer()     function. This flaw allows a local attacker to trigger an out-of-bounds read error and read the contents     of memory on the system. (CVE-2023-43788)

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.

An update of the libX11 package has been released.

The version of libXpm installed on the remote host is prior to 3.5.10-2.12. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1875 advisory.

    A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw     allows a local user to consume all available system resources and cause a denial of service condition.
    (CVE-2023-43786)

    libX11: integer overflow in XCreateImage() leading to a heap overflow. (CVE-2023-43787)

    libXpm: out of bounds read on XPM with corrupted colormap (CVE-2023-43789)

Tenable has extracted the preceding description block directly from the tested product 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 version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0020 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2023-43786:
    A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw     allows a local user to consume all available system resources and cause a denial of service condition.

    CVE-2023-43787:
    A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This     flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated     privileges.

    CVE-2023-3138:
    A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in     libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of     the arrays that those functions write to, using those IDs as array indexes. They trust that they were     called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X     servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-     bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other     portions of the Display structure and not write outside the bounds of the Display structure itself,     possibly causing the client to crash with this memory corruption.

    CVE-2023-43785:
    A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function.
    This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on     the system.

Tenable has extracted the preceding description block directly from the Tencent 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 remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6407-1 advisory.

    Gregory James Duck discovered that libx11 incorrectly handled certain keyboard symbols. If a user were     tricked into connecting to a malicious X server, a remote attacker could use this issue to cause libx11 to     crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-43785)

    Yair Mizrahi discovered that libx11 incorrectly handled certain malformed XPM image files. If a user were     tricked into opening a specially crafted XPM image file, a remote attacker could possibly use this issue     to consume memory, leading to a denial of service. (CVE-2023-43786)

    Yair Mizrahi discovered that libx11 incorrectly handled certain malformed XPM image files. If a user were     tricked into opening a specially crafted XPM image file, a remote attacker could use this issue to cause     libx11 to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2023-43787)

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

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

ID	Name	Product	Family	Published	Updated	Severity
201938	GLSA-202407-21 : X.Org X11 library: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	7/6/2024	9/24/2025	high
194776	RHEL 9 : libX11 (RHSA-2024:2145)	Nessus	Red Hat Local Security Checks	4/30/2024	11/7/2024	high
182470	Ubuntu 20.04 LTS / 22.04 LTS / 23.04 : libXpm vulnerabilities (USN-6408-1)	Nessus	Ubuntu Local Security Checks	10/3/2023	8/27/2024	high
191837	EulerOS 2.0 SP8 : libX11 (EulerOS-SA-2024-1281)	Nessus	Huawei Local Security Checks	3/12/2024	3/12/2024	high
191988	EulerOS 2.0 SP10 : libXpm (EulerOS-SA-2024-1318)	Nessus	Huawei Local Security Checks	3/12/2024	3/12/2024	high
192059	EulerOS Virtualization 2.10.1 : libX11 (EulerOS-SA-2024-1362)	Nessus	Huawei Local Security Checks	3/14/2024	3/14/2024	high
192349	EulerOS Virtualization 2.11.0 : libX11 (EulerOS-SA-2024-1430)	Nessus	Huawei Local Security Checks	3/21/2024	3/21/2024	high
193617	EulerOS Virtualization 2.10.0 : libXpm (EulerOS-SA-2024-1530)	Nessus	Huawei Local Security Checks	4/19/2024	4/19/2024	high
197233	EulerOS Virtualization 3.0.6.0 : libXpm (EulerOS-SA-2024-1691)	Nessus	Huawei Local Security Checks	5/17/2024	5/17/2024	high
204498	Photon OS 5.0: Libx11 PHSA-2023-5.0-0112	Nessus	PhotonOS Local Security Checks	7/24/2024	7/24/2024	high
184386	Amazon Linux AMI : libXpm (ALAS-2023-1875)	Nessus	Amazon Linux Local Security Checks	11/3/2023	12/11/2024	high
238986	TencentOS Server 4: libX11 (TSSA-2025:0020)	Nessus	Tencent Local Security Checks	6/16/2025	11/20/2025	high
182471	Ubuntu 20.04 LTS / 22.04 LTS / 23.04 : libx11 vulnerabilities (USN-6407-1)	Nessus	Ubuntu Local Security Checks	10/3/2023	8/27/2024	high

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