The remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5517 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 16.04 ESM / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6408-2 advisory.

    USN-6408-1 fixed several vulnerabilities in libXpm. This update provides the corresponding update for     Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.



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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-383 advisory.

    libX11: out-of-bounds memory access in _XkbReadKeySyms() (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)

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

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 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 remote Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-c4cf6646b9 advisory.

    libXpm 3.5.17, fixes CVE-2023-43788, CVE-2023-43789, CVE-2023-43786

Tenable has extracted the preceding description block directly from the Fedora 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 CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the libX11-1.7.0-9.el9 build changelog.

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

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

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

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 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.

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 version of libX11 installed on the remote host is prior to 1.6.7-3. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2356 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)

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

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

The version of libXpm installed on the remote host is prior to 3.5.12-9. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2024-2389 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)

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

Note that Nessus has not tested for this issue 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.

ID	Name	Product	Family	Published	Updated	Severity
182651	Debian DSA-5517-1 : libx11 - security update	Nessus	Debian Local Security Checks	10/5/2023	10/16/2023	high
183750	Ubuntu 16.04 ESM / 18.04 ESM : libXpm vulnerabilities (USN-6408-2)	Nessus	Ubuntu Local Security Checks	10/23/2023	10/29/2024	high
183823	Amazon Linux 2023 : libX11, libX11-common, libX11-devel (ALAS2023-2023-383)	Nessus	Amazon Linux Local Security Checks	10/24/2023	12/11/2024	high
184386	Amazon Linux AMI : libXpm (ALAS-2023-1875)	Nessus	Amazon Linux Local Security Checks	11/3/2023	12/11/2024	high
185296	Fedora 39 : libXpm (2023-c4cf6646b9)	Nessus	Fedora Local Security Checks	11/7/2023	11/14/2024	medium
191263	CentOS 9 : libX11-1.7.0-9.el9	Nessus	CentOS Local Security Checks	2/29/2024	4/26/2024	high
192003	EulerOS 2.0 SP10 : libXpm (EulerOS-SA-2024-1340)	Nessus	Huawei Local Security Checks	3/12/2024	3/12/2024	high
194776	RHEL 9 : libX11 (RHSA-2024:2145)	Nessus	Red Hat Local Security Checks	4/30/2024	11/7/2024	high
186579	Amazon Linux 2 : libX11 (ALAS-2023-2356)	Nessus	Amazon Linux Local Security Checks	12/4/2023	12/11/2024	medium
187818	Amazon Linux 2 : libXpm (ALAS-2024-2389)	Nessus	Amazon Linux Local Security Checks	1/9/2024	12/11/2024	medium
238986	TencentOS Server 4: libX11 (TSSA-2025:0020)	Nessus	Tencent Local Security Checks	6/16/2025	11/20/2025	high

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