medium
5.5
CWE
665
Advisory Published
CVE Published
Updated

CVE-2020-14347

First published: Thu Jul 30 2020(Updated: )

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

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

Affected SoftwareAffected VersionHow to fix
debian/xorg-server<=2:1.20.8-2<=2:1.20.4-1
2:1.20.9-1
2:1.20.4-1+deb10u1
X.org Xorg-server<1.20.9
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
redhat/xorg-server<1.20.9
1.20.9
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
debian/xorg-server
2:1.20.11-1+deb11u13
2:1.20.11-1+deb11u14
2:21.1.7-3+deb12u8
2:21.1.14-2
2:21.1.15-2

Remedy

https://lists.x.org/archives/xorg-announce/2020-July/003051.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-14347?

    CVE-2020-14347 is a vulnerability in X.Org Xserver that allows a local authenticated attacker to obtain sensitive information.

  • How does CVE-2020-14347 work?

    CVE-2020-14347 works by exploiting a failure to initialize the memory in xserver pixmap data, which can leak parts of sensitive information.

  • What is the severity of CVE-2020-14347?

    CVE-2020-14347 has a severity rating of high.

  • Which software versions are affected by CVE-2020-14347?

    The affected software versions of CVE-2020-14347 are xorg-server-hwe-18.04 (2:1.20.8-2ubuntu2.2~18.04.2), xorg-server-hwe-18.04 (1.20.9), xorg-server (2:1.19.6-1ubuntu4.5), xorg-server (2:1.20.8-2ubuntu2.3), xorg-server (2:1.15.1-0ubuntu2.11+), xorg-server (2:1.18.4-0ubuntu0.9), xorg-server-hwe-16.04 (1.20.9), xorg-server-hwe-16.04 (2:1.19.6-1ubuntu4.1~16.04.3), xorg-server (1.20.9), xorg-server (2:1.20.9-1), and xorg-server (2:1.20.4-1+deb10u1).

  • How do I fix CVE-2020-14347?

    To fix CVE-2020-14347, update to the latest version of the affected software packages: xorg-server-hwe-18.04 (2:1.20.8-2ubuntu2.2~18.04.2), xorg-server-hwe-18.04 (1.20.9), xorg-server (2:1.19.6-1ubuntu4.5), xorg-server (2:1.20.8-2ubuntu2.3), xorg-server (2:1.15.1-0ubuntu2.11+), xorg-server (2:1.18.4-0ubuntu0.9), xorg-server-hwe-16.04 (1.20.9), xorg-server-hwe-16.04 (2:1.19.6-1ubuntu4.1~16.04.3), xorg-server (1.20.9), xorg-server (2:1.20.9-1), and xorg-server (2:1.20.4-1+deb10u1).

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