Alpine: multiple xorg-server packages: security update to 21.1.17-r0

high Tenable Cloud Security Plugin ID 427887

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly
validate input. This issue leads to an integer overflow when computing the total size to allocate.
(CVE-2025-49180)

- A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no
cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash.
(CVE-2025-49175)

- A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking
against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.
(CVE-2025-49176)

- A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the
request length, allowing a client to read unintended memory from previous requests. (CVE-2025-49177)

- A flaw was found in the X server's request handling. Non-zero 'bytes to ignore' in a client's request can
cause the server to skip processing another client's request, potentially leading to a denial of service.
(CVE-2025-49178)

Plugin Details

Severity: High

ID: 427887

Version: Revision 1.16

Type: Local

Family: Alpine Linux Local Security Checks

Published: 6/18/2025

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.49

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-2025-49180

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/17/2025

Reference Information

CVE: CVE-2025-49175, CVE-2025-49176, CVE-2025-49177, CVE-2025-49178, CVE-2025-49179, CVE-2025-49180

Detections

Analytics