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EulerOS 2.0 SP8 : xorg-x11-server (EulerOS-SA-2024-1307)

high Nessus Plugin ID 191818

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

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

 - A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions. (CVE-2023-0494)

 - 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)

 - A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved. (CVE-2023-6377)

 - A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information. (CVE-2023-6478)

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.

Solution

Update the affected xorg-x11-server packages.

See Also

http://www.nessus.org/u?47658442

Plugin Details

Severity: High

ID: 191818

File Name: EulerOS_SA-2024-1307.nasl

Version: 1.0

Type: local

Published: 3/12/2024

Updated: 3/12/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2023-6478

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/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

CVSS Score Source: CVE-2023-6377

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:xorg-x11-server-xwayland, p-cpe:/a:huawei:euleros:xorg-x11-server-xephyr, p-cpe:/a:huawei:euleros:xorg-x11-server-xorg, p-cpe:/a:huawei:euleros:xorg-x11-server-xvfb, p-cpe:/a:huawei:euleros:xorg-x11-server-common, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/12/2024

Vulnerability Publication Date: 2/7/2023

Reference Information

CVE: CVE-2023-0494, CVE-2023-1393, CVE-2023-5367, CVE-2023-5380, CVE-2023-6377, CVE-2023-6478