SUSE SLES12 Security Update : libX11 (SUSE-SU-2021:1766-1)

critical Nessus Plugin ID 150012



The remote SUSE host is missing one or more security updates.


This update for libX11 fixes the following issues :

CVE-2021-31535: Fixed missing request length checks in libX11 (bsc#1182506).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP5 :

zypper in -t patch SUSE-SLE-SDK-12-SP5-2021-1766=1

SUSE Linux Enterprise Server 12-SP5 :

zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-1766=1

See Also

Plugin Details

Severity: Critical

ID: 150012

File Name: suse_SU-2021-1766-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/27/2021

Updated: 1/26/2022

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

Temporal Vector: E:POC/RL:OF/RC:C

CVSS Score Source: CVE-2021-31535


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: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libX11, p-cpe:/a:novell:suse_linux:libX11-6, p-cpe:/a:novell:suse_linux:libX11-6-debuginfo, p-cpe:/a:novell:suse_linux:libX11-debugsource, p-cpe:/a:novell:suse_linux:libX11-xcb1, p-cpe:/a:novell:suse_linux:libX11-xcb1-debuginfo, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/26/2021

Reference Information

CVE: CVE-2021-31535