CVE-2020-14345 Memory corruption in xorg-x11-server

What is CVE-2020-14345?

CVE-2020-14345 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 15 Sep 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 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.

Weakness: CWE-119

Which versions are affected by CVE-2020-14345?

It affects 2 products.

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

How do I fix CVE-2020-14345?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-14345 being exploited?

There is no known exploitation of CVE-2020-14345 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-2020-14345, DEBIAN-CVE-2020-14345, GHSA-6xpw-chm5-x9v3, UBUNTU-CVE-2020-14345, USN-4490-1.