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GLSA-202105-16 : X.Org X11 library: Denial of service

critical Nessus Plugin ID 156966

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Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-202105-16 (X.Org X11 library: Denial of service)

 It was discovered that XLookupColor() and other X.Org X11 library functions lacked proper validation of the length of their string parameters.
 Impact :

 An attacker could emit arbitrary X protocol requests to the X server through malicious crafted string parameters in applications linked against X.Org X11 library.
 Workaround :

 There is no known workaround at this time.

Solution

All X.Org X11 library users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=x11-libs/libX11-1.7.1'

See Also

https://security.gentoo.org/glsa/202105-16

Plugin Details

Severity: Critical

ID: 156966

File Name: gentoo_GLSA-202105-16.nasl

Version: 1.4

Type: local

Published: 1/24/2022

Updated: 12/21/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2021-31535

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:libx11, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/26/2021

Vulnerability Publication Date: 5/27/2021

Reference Information

CVE: CVE-2021-31535

GLSA: 202105-16