Detections
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GLSA-202104-02 : X.Org X Server: Privilege escalation

high Nessus Plugin ID 149216

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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-202104-02 (X.Org X Server: Privilege escalation)

 It was discovered that X.Org X Server did not sufficiently check the length of the XInput extension’s ChangeFeedbackControl request.
 Impact :

 An authorized attacker could possibly escalate privileges, or cause a Denial of Service condition.
 Workaround :

 There is no known workaround at this time.

Solution

All X.Org X Server users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=x11-base/xorg-server-1.20.11'

See Also

https://security.gentoo.org/glsa/202104-02

Plugin Details

Severity: High

ID: 149216

File Name: gentoo_GLSA-202104-02.nasl

Version: 1.3

Type: local

Published: 5/3/2021

Updated: 5/24/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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-2021-3472

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:gentoo:linux:xorg-server, cpe:/o:gentoo:linux

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/30/2021

Vulnerability Publication Date: 4/26/2021

Reference Information

CVE: CVE-2021-3472

GLSA: 202104-02