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Azure Linux 3.0 Security Update: xorg-x11-server / xorg-x11-server-Xwayland (CVE-2025-49179)

high Nessus Plugin ID 244802

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Synopsis

The remote Azure Linux host is missing one or more security updates.

Description

The version of xorg-x11-server / xorg-x11-server-Xwayland installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-49179 advisory.

 - A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.
 (CVE-2025-49179)

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2025-49179

Plugin Details

Severity: High

ID: 244802

File Name: azure_linux_CVE-2025-49179.nasl

Version: 1.1

Type: local

Published: 8/7/2025

Updated: 8/7/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2025-49179

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:xorg-x11-server-xwayland-devel, p-cpe:/a:microsoft:azure_linux:xorg-x11-server-xwayland, p-cpe:/a:microsoft:azure_linux:xorg-x11-server-xorg, p-cpe:/a:microsoft:azure_linux:xorg-x11-server-xvfb, p-cpe:/a:microsoft:azure_linux:xorg-x11-server-common, p-cpe:/a:microsoft:azure_linux:xorg-x11-server-xnest, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:xorg-x11-server-xwayland-debuginfo, p-cpe:/a:microsoft:azure_linux:xorg-x11-server-devel

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/6/2025

Vulnerability Publication Date: 6/17/2025

Reference Information

CVE: CVE-2025-49179