CVE-2018-18826 Memory corruption in n/a

Medium 6.5 Published 30 Oct 2018 Updated 5 Aug 2024

A heap-based buffer overflow in Libav allows attackers to cause a denial-of-service via a crafted AAC file.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2018-18826?

CVE-2018-18826 is a medium-severity memory corruption vulnerability in Libav Libav, published on 30 Oct 2018. 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

There exists a heap-based buffer overflow in vc1_decode_p_mb_intfi in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-service via a crafted aac file.

Weakness: CWE-787

Which versions are affected by CVE-2018-18826?

It affects 1 product.

Products include Libav Libav.

How do I fix CVE-2018-18826?

No fix has been published for CVE-2018-18826 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2018-18826 being exploited?

There is no known exploitation of CVE-2018-18826 in the wild and no public exploit code.

All Libav Libav vulnerabilities

Sources

Also known as GHSA-qg5r-qr4p-h2x5, UBUNTU-CVE-2018-18826.