CVE-2020-18778 Memory corruption in n/a
A heap-based buffer over-read in Libav allows attackers to cause denial-of-service via a crafted 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-2020-18778?
CVE-2020-18778 is a medium-severity memory corruption vulnerability in Libav Libav, published on 23 Aug 2021. 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
In Libav 12.3, there is a heap-based buffer over-read in vc1_decode_p_mb_intfi in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.
Weakness: CWE-125
Which versions are affected by CVE-2020-18778?
It affects 1 product.
Products include Libav Libav.
How do I fix CVE-2020-18778?
No fix has been published for CVE-2020-18778 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-2020-18778 being exploited?
There is no known exploitation of CVE-2020-18778 in the wild and no public exploit code.
Other vulnerabilities in Libav Libav
Sources
Also known as GHSA-gm8p-5337-8j5p, UBUNTU-CVE-2020-18778.