Detections
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Echo: xorg-server: security update to 2:21.1.16-1.3+deb13u1+e1

high Tenable Self-Hosted Container Security Plugin ID 459189

Description

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

 - A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with 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 a screen 1 to a screen 0, a use-after-free issue may be triggered during
 shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.
 (CVE-2023-5574)

Solution

Update the xorg-server library and its related packages to version 2:21.1.16-1.3+deb13u1+e1 or later.

See Also

https://access.redhat.com/errata/RHSA-2024:2298

https://advisory.echohq.com/cve/CVE-2023-5574

Plugin Details

Severity: High

ID: 459189

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2023-5574

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/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

Patch Publication Date: 5/13/2026

Vulnerability Publication Date: 10/25/2023

Reference Information

CVE: CVE-2023-5574