CVE-2019-9719 Memory corruption in n/a
A stack-based buffer overflow in Libav's subtitle decoder allows attackers to execute arbitrary code or cause denial of service via a crafted Matroska video 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-2019-9719?
CVE-2019-9719 is a high-severity memory corruption vulnerability in Libav Libav, published on 19 Sep 2019. 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
A stack-based buffer overflow in the subtitle decoder in Libav 12.3 allows attackers to corrupt the stack via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c misuses snprintf. NOTE: Third parties dispute that this is a vulnerability because “no evidence of a vulnerability is provided” and only “a generic warning from a static code analysis” is provided
Weakness: CWE-787
Which versions are affected by CVE-2019-9719?
It affects 1 product.
Products include Libav Libav.
How do I fix CVE-2019-9719?
No fix has been published for CVE-2019-9719 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-2019-9719 being exploited?
There is no known exploitation of CVE-2019-9719 in the wild and no public exploit code.
Other vulnerabilities in Libav Libav
Sources
Also known as GHSA-wm38-2p64-43v7.