Detections
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Alpine: libx11: security update to 1.7.3.1-r1

high Tenable Self-Hosted Container Security Plugin ID 405395

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in
 libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of
 the arrays that those functions write to, using those IDs as array indexes. They trust that they were
 called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X
 servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-
 bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other
 portions of the Display structure and not write outside the bounds of the Display structure itself,
 possibly causing the client to crash with this memory corruption. (CVE-2023-3138)

See Also

https://security.alpinelinux.org/vuln/CVE-2023-3138

Plugin Details

Severity: High

ID: 405395

Version: Revision 1.27

Type: Local

Published: 10/31/2023

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.51

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-3138

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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: 6/16/2023

Reference Information

CVE: CVE-2023-3138