high
7.8
CWE
119
Advisory Published
CVE Published
Updated
Advisory Published

CVE-2020-14345: X.Org Server XkbSetNames Out-Of-Bounds Access Privilege Escalation Vulnerability

First published: Thu Jul 30 2020(Updated: )

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Out-Of-Bounds access in XkbSetNames function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
IBM Cloud Pak for Security (CP4S)<=1.7.2.0
IBM Cloud Pak for Security (CP4S)<=1.7.1.0
IBM Cloud Pak for Security (CP4S)<=1.7.0.0
X.Org X Server<1.20.9
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
X.Org Server
redhat/xorg-x11-server<1.20.9
1.20.9
ubuntu/xorg-server<2:1.19.6-1ubuntu4.6
2:1.19.6-1ubuntu4.6
ubuntu/xorg-server<2:1.20.8-2ubuntu2.4
2:1.20.8-2ubuntu2.4
ubuntu/xorg-server<2:1.15.1-0ubuntu2.11+
2:1.15.1-0ubuntu2.11+
ubuntu/xorg-server<2:1.18.4-0ubuntu0.10
2:1.18.4-0ubuntu0.10
ubuntu/xorg-server-hwe-16.04<2:1.19.6-1ubuntu4.1~16.04.4
2:1.19.6-1ubuntu4.1~16.04.4
ubuntu/xorg-server-hwe-18.04<2:1.20.8-2ubuntu2.2~18.04.3
2:1.20.8-2ubuntu2.2~18.04.3
debian/xorg-server
2:1.20.4-1+deb10u4
2:1.20.4-1+deb10u14
2:1.20.11-1+deb11u11
2:1.20.11-1+deb11u13
2:21.1.7-3+deb12u5
2:21.1.7-3+deb12u7
2:21.1.12-1

Remedy

https://gitlab.freedesktop.org/xorg/xserver/-/commit/f7cd1276bbd4fe3a9700096dec33b52b8440788d

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-14345?

    CVE-2020-14345 is a vulnerability in X.Org Server that allows local attackers to escalate privileges.

  • How severe is CVE-2020-14345?

    CVE-2020-14345 has a severity rating of 7.8, which is considered high.

  • Who is affected by CVE-2020-14345?

    X.Org Server installations with versions up to and including 1.20.9 are affected by CVE-2020-14345. It also affects certain versions of X.Org Server on Ubuntu and IBM Cloud Pak for Security.

  • How can this vulnerability be exploited?

    To exploit CVE-2020-14345, an attacker must first be able to execute low-privileged code on the target system.

  • Where can I find more information about CVE-2020-14345?

    You can find more information about CVE-2020-14345 on the MITRE website (CVE-2020-14345), the X.Org Server mailing list, and the Ubuntu Security Notices (USN-4490-1).

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