Slackware Linux 14.0 / 14.1 / 14.2 / current xorg-server Multiple Vulnerabilities (SSA:2021-350-01)

high Nessus Plugin ID 156121

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Synopsis

The remote Slackware Linux host is missing a security update to xorg-server.

Description

The version of xorg-server installed on the remote host is prior to 1.12.4 / 1.14.3 / 1.18.3 / 1.20.14 / 21.1.4. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2021-350-01 advisory.

- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcXFixesCreatePointerBarrier function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4009)

- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4008)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the affected xorg-server package.

Plugin Details

Severity: High

ID: 156121

File Name: Slackware_SSA_2021-350-01.nasl

Version: 1.5

Type: local

Family: Slackware Local Security Checks

Published: 12/16/2021

Updated: 4/26/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-4009

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

CPE: p-cpe:/a:slackware:slackware_linux:xorg-server, p-cpe:/a:slackware:slackware_linux:xorg-server-xephyr, p-cpe:/a:slackware:slackware_linux:xorg-server-xnest, p-cpe:/a:slackware:slackware_linux:xorg-server-xvfb, p-cpe:/a:slackware:slackware_linux:xorg-server-xwayland, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:14.0, cpe:/o:slackware:slackware_linux:14.1, cpe:/o:slackware:slackware_linux:14.2

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2021-4008, CVE-2021-4009

Detections

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