Alpine: multiple libx11 packages: security update to 1.8.7-r0

high Tenable Self-Hosted Container Security Plugin ID 424077

Description

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

- A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function.
This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on
the system. (CVE-2023-43785)

- A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw
allows a local user to consume all available system resources and cause a denial of service condition.
(CVE-2023-43786)

- A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This
flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated
privileges. (CVE-2023-43787)

See Also

https://security.alpinelinux.org/vuln/CVE-2023-43785

https://security.alpinelinux.org/vuln/CVE-2023-43786

https://security.alpinelinux.org/vuln/CVE-2023-43787

Plugin Details

Severity: High

ID: 424077

Version: Revision 1.9

Type: Local

Published: 4/4/2025

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: 57.58

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-2023-43787

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: 10/4/2023

Reference Information

CVE: CVE-2023-43785, CVE-2023-43786, CVE-2023-43787