Synopsis
The remote Amazon Linux 2023 host is missing a security update.
Description
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-102 advisory.
- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4008)
- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcXFixesCreatePointerBarrier function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4009)
- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcScreenSaverSuspend function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4010)
- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4011)
- A vulnerability classified as critical was found in X.org Server. Affected by this vulnerability is the function _GetCountedString of the file xkb/xkb.c. The manipulation leads to buffer overflow. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211051. (CVE-2022-3550)
- A vulnerability, which was classified as problematic, has been found in X.org Server. Affected by this issue is the function ProcXkbGetKbdByName of the file xkb/xkb.c. The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211052.
(CVE-2022-3551)
- A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-4283)
- A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. This issue does not affect systems where client and server use the same byte order.
(CVE-2022-46340)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIPassiveUngrab request accesses out-of-bounds memory when invoked with a high keycode or button code. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46341)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the XvdiSelectVideoNotify request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X se (CVE-2022-46342)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46343)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIChangeProperty request has a length-validation issues, resulting in out-of-bounds memory reads and potential information disclosure. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46344)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'dnf update xorg-x11-server --releasever=2023.0.20230222 ' to update your system.
Plugin Details
File Name: al2023_ALAS2023-2023-102.nasl
Agent: unix
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:xorg-x11-server-xdmx-debuginfo, p-cpe:/a:amazon:linux:xorg-x11-server-xephyr, p-cpe:/a:amazon:linux:xorg-x11-server-xvfb-debuginfo, p-cpe:/a:amazon:linux:xorg-x11-server-debuginfo, p-cpe:/a:amazon:linux:xorg-x11-server-xephyr-debuginfo, p-cpe:/a:amazon:linux:xorg-x11-server-common, p-cpe:/a:amazon:linux:xorg-x11-server-devel, p-cpe:/a:amazon:linux:xorg-x11-server-xnest-debuginfo, p-cpe:/a:amazon:linux:xorg-x11-server-xdmx, p-cpe:/a:amazon:linux:xorg-x11-server-source, p-cpe:/a:amazon:linux:xorg-x11-server-debugsource, p-cpe:/a:amazon:linux:xorg-x11-server-xvfb, p-cpe:/a:amazon:linux:xorg-x11-server-xnest, p-cpe:/a:amazon:linux:xorg-x11-server-xorg, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:xorg-x11-server-xorg-debuginfo
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 2/17/2023
Vulnerability Publication Date: 12/17/2021
Reference Information
CVE: CVE-2021-4008, CVE-2021-4009, CVE-2021-4010, CVE-2021-4011, CVE-2022-3550, CVE-2022-3551, CVE-2022-4283, CVE-2022-46340, CVE-2022-46341, CVE-2022-46342, CVE-2022-46343, CVE-2022-46344