The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4306-1 advisory.

  - A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect     calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function     in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible     escalation of privileges or denial of service. (CVE-2023-5367)

  - A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific     and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode).
    If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during     shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.
    (CVE-2023-5574)

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 ALAS2023-2023-404 advisory.

    A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect     calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function     in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible     escalation of privileges or denial of service. (CVE-2023-5367)

    A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and     legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if     the pointer is warped from within a window on one screen to the root window of the other screen and if the     original window is destroyed followed by another window being destroyed. (CVE-2023-5380)

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 Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:6802 advisory.

    X.Org is an open-source implementation of the X Window System. It provides the basic low-level     functionality that full-fledged graphical user interfaces are designed upon.

    Security Fix(es):

    * xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty (CVE-2023-5367)

    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 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-2023-6802 advisory.

    [1.20.4-24]
    - CVE fix for: CVE-2023-5367       Resolves: https://issues.redhat.com/browse/RHEL-13424

Tenable has extracted the preceding description block directly from the Oracle 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.

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-dbacf5d9f6 advisory.

    Fixes CVEs reported against Xserver.

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2335 advisory.

    A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect     calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function     in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible     escalation of privileges or denial of service. (CVE-2023-5367)

    A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and     legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if     the pointer is warped from within a window on one screen to the root window of the other screen and if the     original window is destroyed followed by another window being destroyed. (CVE-2023-5380)

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 Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:7405 advisory.

    Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop     environment not only on the machine where it is running, but from anywhere on the Internet and from a wide     variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

    Security Fix(es):

    * xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty (CVE-2023-5367)

    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 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-2023-7428 advisory.

    - Dropped xorg-CVE-2023-5367.patch
    - Fix CVE-2023-5380 tigervnc: xorg-x11-server: Use-after-free bug in DestroyWindow       Resolves: RHEL-15235

Tenable has extracted the preceding description block directly from the Oracle 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-2024:0010 advisory.

    Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop     environment not only on the machine where it is running, but from anywhere on the Internet and from a wide     variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

    Security Fix(es):

    * xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty (CVE-2023-5367)

    * xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions (CVE-2023-6377)

    * xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty     (CVE-2023-6478)

    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 remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7428 advisory.

  - A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect     calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function     in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible     escalation of privileges or denial of service. (CVE-2023-5367)

  - A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and     legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if     the pointer is warped from within a window on one screen to the root window of the other screen and if the     original window is destroyed followed by another window being destroyed. (CVE-2023-5380)

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 a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2024:2170 advisory.

    Xwayland is an X server for running X clients under Wayland.

    Security Fix(es):

    * xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty (CVE-2023-5367)

    * xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions (CVE-2023-6377)

    * xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty     (CVE-2023-6478)

    * xorg-x11-server: Heap buffer overflow in DeviceFocusEvent and ProcXIQueryPointer (CVE-2023-6816)

    * xorg-x11-server: reattaching to different master device may lead to out-of-bounds memory access     (CVE-2024-0229)

    * xorg-x11-server: SELinux unlabeled GLX PBuffer (CVE-2024-0408)

    * xorg-x11-server: SELinux context corruption (CVE-2024-0409)

    * xorg-x11-server: heap buffer overflow in XISendDeviceHierarchyEvent (CVE-2024-21885)

    * xorg-x11-server: heap buffer overflow in DisableDevice (CVE-2024-21886)

    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.

According to the versions of the xorg-x11-server package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation.
    If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a     dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
    (CVE-2023-1393)

  - A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect     calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function     in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible     escalation of privileges or denial of service. (CVE-2023-5367)

  - A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and     legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if     the pointer is warped from within a window on one screen to the root window of the other screen and if the     original window is destroyed followed by another window being destroyed. (CVE-2023-5380)

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.

ID	Name	Product	Family	Published	Updated	Severity
184117	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : xwayland (SUSE-SU-2023:4306-1)	Nessus	SuSE Local Security Checks	11/1/2023	11/3/2023	high
184431	Amazon Linux 2023 : xorg-x11-server-common, xorg-x11-server-devel, xorg-x11-server-source (ALAS2023-2023-404)	Nessus	Amazon Linux Local Security Checks	11/4/2023	12/11/2024	high
185375	RHEL 7 : xorg-x11-server (RHSA-2023:6802)	Nessus	Red Hat Local Security Checks	11/8/2023	11/7/2024	high
185423	Oracle Linux 7 : xorg-x11-server (ELSA-2023-6802)	Nessus	Oracle Linux Local Security Checks	11/9/2023	11/2/2024	high
185478	Fedora 38 : tigervnc (2023-dbacf5d9f6)	Nessus	Fedora Local Security Checks	11/12/2023	11/14/2024	high
185787	Amazon Linux 2 : xorg-x11-server (ALAS-2023-2335)	Nessus	Amazon Linux Local Security Checks	11/15/2023	12/11/2024	high
186059	RHEL 8 : tigervnc (RHSA-2023:7405)	Nessus	Red Hat Local Security Checks	11/21/2023	11/7/2024	high
186185	Oracle Linux 7 : tigervnc (ELSA-2023-7428)	Nessus	Oracle Linux Local Security Checks	11/22/2023	10/22/2024	high
187420	RHEL 9 : tigervnc (RHSA-2024:0010)	Nessus	Red Hat Local Security Checks	1/2/2024	11/8/2024	high
187758	CentOS 7 : tigervnc (RHSA-2023:7428)	Nessus	CentOS Local Security Checks	1/9/2024	1/9/2024	high
194793	RHEL 9 : xorg-x11-server-Xwayland (RHSA-2024:2170)	Nessus	Red Hat Local Security Checks	4/30/2024	11/7/2024	critical
195268	EulerOS 2.0 SP10 : xorg-x11-server (EulerOS-SA-2024-1582)	Nessus	Huawei Local Security Checks	5/9/2024	5/9/2024	high

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