The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:0116-1 advisory.

  - A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for     each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the     X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap     overflow if a bigger value was used. (CVE-2023-6816)

  - The X.Org project reports: Both DeviceFocusEvent and the XIQueryPointer reply contain a bit     for each logical button currently down. Buttons can be arbitrarily             mapped to any value up to     255 but the X.Org Server was only             allocating space for the device's number of buttons,     leading to a heap overflow if a bigger value was used. If a device has both a button class and a key class     and             numButtons is zero, we can get an out-of-bounds write due             to event under-     allocation in the DeliverStateNotifyEvent             function. The XISendDeviceHierarchyEvent() function     allocates space to             store up to MAXDEVICES (256) xXIHierarchyInfo structures in info.
    If a device with a given ID was removed and a new device with             the same ID added both in the     same operation,             the single device ID will lead to two info structures being     written to info.             Since this case can occur for every device ID at once,             a total of     two times MAXDEVICES info structures might be written             to the allocation, leading to a heap     buffer overflow. The DisableDevice() function is called whenever an enabled device             is disabled     and it moves the device from the inputInfo.devices             linked list to the inputInfo.off_devices     linked list.             However, its link/unlink operation has an issue during the recursive     call to DisableDevice() due to the prev pointer pointing to a             removed device.             This     issue leads to a length mismatch between the total number of             devices and the number of device     in the list, leading to a heap             overflow and, possibly, to local privilege escalation.
    (CVE-2024-0229, CVE-2024-21885, CVE-2024-21886)

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

The remote SUSE Linux SLED15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:0165-1 advisory.

  - A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for     each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the     X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap     overflow if a bigger value was used. (CVE-2023-6816)

  - The X.Org project reports: Both DeviceFocusEvent and the XIQueryPointer reply contain a bit     for each logical button currently down. Buttons can be arbitrarily             mapped to any value up to     255 but the X.Org Server was only             allocating space for the device's number of buttons,     leading to a heap overflow if a bigger value was used. If a device has both a button class and a key class     and             numButtons is zero, we can get an out-of-bounds write due             to event under-     allocation in the DeliverStateNotifyEvent             function. The XISendDeviceHierarchyEvent() function     allocates space to             store up to MAXDEVICES (256) xXIHierarchyInfo structures in info.
    If a device with a given ID was removed and a new device with             the same ID added both in the     same operation,             the single device ID will lead to two info structures being     written to info.             Since this case can occur for every device ID at once,             a total of     two times MAXDEVICES info structures might be written             to the allocation, leading to a heap     buffer overflow. The DisableDevice() function is called whenever an enabled device             is disabled     and it moves the device from the inputInfo.devices             linked list to the inputInfo.off_devices     linked list.             However, its link/unlink operation has an issue during the recursive     call to DisableDevice() due to the prev pointer pointing to a             removed device.             This     issue leads to a length mismatch between the total number of             devices and the number of device     in the list, leading to a heap             overflow and, possibly, to local privilege escalation.
    (CVE-2024-0229, CVE-2024-21885, CVE-2024-21886)

  - A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the     buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a     GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the     XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.
    (CVE-2024-0408)

  - A flaw was found in the X.Org server. The cursor code in both Xephyr and Xwayland uses the wrong type of     private at creation. It uses the cursor bits type with the cursor as private, and when initiating the     cursor, that overwrites the XSELINUX context. (CVE-2024-0409)

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 multiple vulnerabilities as referenced in the RHSA-2024:0607 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: 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: 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.

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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:0597 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: 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: 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.

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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:0607 advisory.

  - A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for     each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the     X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap     overflow if a bigger value was used. (CVE-2023-6816)

  - The X.Org project reports: Both DeviceFocusEvent and the XIQueryPointer reply contain a bit     for each logical button currently down. Buttons can be arbitrarily             mapped to any value up to     255 but the X.Org Server was only             allocating space for the device's number of buttons,     leading to a heap overflow if a bigger value was used. If a device has both a button class and a key class     and             numButtons is zero, we can get an out-of-bounds write due             to event under-     allocation in the DeliverStateNotifyEvent             function. The XISendDeviceHierarchyEvent() function     allocates space to             store up to MAXDEVICES (256) xXIHierarchyInfo structures in info.
    If a device with a given ID was removed and a new device with             the same ID added both in the     same operation,             the single device ID will lead to two info structures being     written to info.             Since this case can occur for every device ID at once,             a total of     two times MAXDEVICES info structures might be written             to the allocation, leading to a heap     buffer overflow. The DisableDevice() function is called whenever an enabled device             is disabled     and it moves the device from the inputInfo.devices             linked list to the inputInfo.off_devices     linked list.             However, its link/unlink operation has an issue during the recursive     call to DisableDevice() due to the prev pointer pointing to a             removed device.             This     issue leads to a length mismatch between the total number of             devices and the number of device     in the list, leading to a heap             overflow and, possibly, to local privilege escalation.
    (CVE-2024-0229, CVE-2024-21885, CVE-2024-21886)

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-0607 advisory.

    - Fix CVE-2024-21886 tigervnc: xorg-x11-server: heap buffer overflow in DisableDevice       Resolves: RHEL-20388
    - Fix CVE-2024-21885 tigervnc: xorg-x11-server: heap buffer overflow in XISendDeviceHierarchyEvent       Resolves: RHEL-20382
    - Fix CVE-2024-0229 tigervnc: xorg-x11-server: reattaching to different master device may lead to out-of-     bounds memory access       Resolves: RHEL-20530

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2024-2455 advisory.

    Heap buffer overflow in DeviceFocusEvent and ProcXIQueryPointer

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/9e2ecb2af8302dedc49cb6a63ebe063c58a9e7e3     (CVE-2023-6816)

    Reattaching to different master device may lead to out-of-bounds memory access

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/ece23be888a93b741aa1209d1dbf64636109d6a5NOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/219c54b8a3337456ce5270ded6a67bcde53553d5NOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/df3c65706eb169d5938df0052059f3e0d5981b74     (CVE-2024-0229)

    SELinux unlabeled GLX PBuffer

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/e5e8586a12a3ec915673edffa10dc8fe5e15dac3     (CVE-2024-0408)

    SELinux context corruption

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/2ef0f1116c65d5cb06d7b6d83f8a1aea702c94f7     (CVE-2024-0409)

    Heap buffer overflow in XISendDeviceHierarchyEvent

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/4a5e9b1895627d40d26045bd0b7ef3dce503cbd1     (CVE-2024-21885)

    Heap buffer overflow in DisableDevice

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/bc1fdbe46559dd947674375946bbef54dd0ce36bNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/26769aa71fcbe0a8403b7fb13b7c9010cc07c3a8     (CVE-2024-21886)

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 Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6587-5 advisory.

    USN-6587-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for     Ubuntu 14.04 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 ALAS-2024-1932 advisory.

    Heap buffer overflow in DeviceFocusEvent and ProcXIQueryPointer

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/9e2ecb2af8302dedc49cb6a63ebe063c58a9e7e3     (CVE-2023-6816)

    Reattaching to different master device may lead to out-of-bounds memory access

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/ece23be888a93b741aa1209d1dbf64636109d6a5NOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/219c54b8a3337456ce5270ded6a67bcde53553d5NOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/df3c65706eb169d5938df0052059f3e0d5981b74     (CVE-2024-0229)

    Heap buffer overflow in XISendDeviceHierarchyEvent

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/4a5e9b1895627d40d26045bd0b7ef3dce503cbd1     (CVE-2024-21885)

    Heap buffer overflow in DisableDevice

    NOTE: https://lists.x.org/archives/xorg/2024-January/061525.htmlNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/bc1fdbe46559dd947674375946bbef54dd0ce36bNOTE:
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/26769aa71fcbe0a8403b7fb13b7c9010cc07c3a8     (CVE-2024-21886)

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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-2169 advisory.

    - Fix use after free related to CVE-2024-21886
    - CVE fix for: CVE-2023-6816, CVE-2024-0229, CVE-2024-21885, CVE-2024-21886,       CVE-2024-0408 and CVE-2024-0409       Resolves: https://issues.redhat.com/browse/RHEL-21203       Resolves: https://issues.redhat.com/browse/RHEL-20531       Resolves: https://issues.redhat.com/browse/RHEL-20380       Resolves: https://issues.redhat.com/browse/RHEL-20386       Resolves: https://issues.redhat.com/browse/RHEL-21193       Resolves: https://issues.redhat.com/browse/RHEL-21200
    - CVE fix for: CVE-2023-6377, CVE-2023-6478       Resolves: https://issues.redhat.com/browse/RHEL-18322       Resolves: https://issues.redhat.com/browse/RHEL-18329
    - CVE fix for: CVE-2023-5380       Resolves: https://issues.redhat.com/browse/RHEL-14062

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 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2024:2996 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 8.10 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for     each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the     X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap     overflow if a bigger value was used. (CVE-2023-6816)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
189172	SUSE SLES12 Security Update : xorg-x11-server (SUSE-SU-2024:0116-1)	Nessus	SuSE Local Security Checks	1/18/2024	1/29/2024	critical
189257	SUSE SLED15 Security Update : xwayland (SUSE-SU-2024:0165-1)	Nessus	SuSE Local Security Checks	1/20/2024	1/29/2024	critical
189783	RHEL 8 : tigervnc (RHSA-2024:0607)	Nessus	Red Hat Local Security Checks	1/30/2024	11/8/2024	critical
189789	RHEL 8 : tigervnc (RHSA-2024:0597)	Nessus	Red Hat Local Security Checks	1/30/2024	11/7/2024	critical
189842	AlmaLinux 8 : tigervnc (ALSA-2024:0607)	Nessus	Alma Linux Local Security Checks	1/31/2024	1/31/2024	critical
189900	Oracle Linux 8 : tigervnc (ELSA-2024-0607)	Nessus	Oracle Linux Local Security Checks	2/1/2024	9/21/2024	critical
190700	Amazon Linux 2 : xorg-x11-server (ALAS-2024-2455)	Nessus	Amazon Linux Local Security Checks	2/19/2024	12/11/2024	critical
192054	Ubuntu 14.04 LTS : X.Org X Server vulnerabilities (USN-6587-5)	Nessus	Ubuntu Local Security Checks	3/13/2024	10/29/2024	critical
194724	Amazon Linux AMI : xorg-x11-server (ALAS-2024-1932)	Nessus	Amazon Linux Local Security Checks	4/29/2024	12/11/2024	critical
195083	Oracle Linux 9 : xorg-x11-server (ELSA-2024-2169)	Nessus	Oracle Linux Local Security Checks	5/6/2024	11/2/2024	critical
197776	RHEL 8 : xorg-x11-server-Xwayland (RHSA-2024:2996)	Nessus	Red Hat Local Security Checks	5/23/2024	11/7/2024	critical
227297	Linux Distros Unpatched Vulnerability : CVE-2023-6816	Nessus	Misc.	3/5/2025	3/5/2025	critical

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