CVE-2016-6892 Use after free in n/a

High 7.5 Published 5 Jan 2017 Updated 6 Aug 2024

Remote attackers can cause a denial of service in MatrixSSL by triggering a free of unallocated memory via a crafted X.509 certificate.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2016-6892?

CVE-2016-6892 is a high-severity use after free vulnerability in n/a, published on 5 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The x509FreeExtensions function in MatrixSSL before 3.8.6 allows remote attackers to cause a denial of service (free of unallocated memory) via a crafted X.509 certificate.

Weakness: CWE-416

Which versions are affected by CVE-2016-6892?

It affects 1 product.

Products include Matrixssl Matrixssl.

How do I fix CVE-2016-6892?

No fix has been published for CVE-2016-6892 yet. Limit exposure of the affected software until one is available.

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-2016-6892 being exploited?

There is no known exploitation of CVE-2016-6892 in the wild and no public exploit code.

Sources

Also known as GHSA-vv4h-mqrq-w4h2.