CVE-2020-6062 Null dereference in CoTURN

What is CVE-2020-6062?

CVE-2020-6062 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 19 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.

Weakness: CWE-476

Which versions are affected by CVE-2020-6062?

It affects 4 products.

Products include Canonical Ubuntu Linux, Coturn Project Coturn, Debian Debian Linux, Fedoraproject Fedora.

How do I fix CVE-2020-6062?

Upgrade to a fixed version.

Is CVE-2020-6062 being exploited?

There is no known exploitation of CVE-2020-6062 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 DEBIAN-CVE-2020-6062, GHSA-8m27-48h2-7f6h, UBUNTU-CVE-2020-6062.