CVE-2020-14347 Information disclosure in xorg-x11-server

What is CVE-2020-14347?

CVE-2020-14347 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 5 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-665

Which versions are affected by CVE-2020-14347?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, X.org X Server.

How do I fix CVE-2020-14347?

Upgrade to a fixed version.

Is CVE-2020-14347 being exploited?

There is no known exploitation of CVE-2020-14347 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2020-14347, DEBIAN-CVE-2020-14347, GHSA-7m6m-38f5-wg3j, MGASA-2020-0335, UBUNTU-CVE-2020-14347.