CVE-2016-4761 Use after free in WebKitGTK+

What is CVE-2016-4761?

CVE-2016-4761 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 22 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Weakness: CWE-416

Which versions are affected by CVE-2016-4761?

It affects 2 products.

Products include Canonical Ubuntu Linux, Webkitgtk Webkitgtk\+.

How do I fix CVE-2016-4761?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2016-4761 being exploited?

There is no known exploitation of CVE-2016-4761 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 GHSA-342r-hgrw-rv65, UBUNTU-CVE-2016-4761.