CVE-2019-9717 Denial of service in n/a
Attackers can cause denial of service via CPU exhaustion using crafted Matroska files in Libav's subtitle decoder.
- 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-2019-9717?
CVE-2019-9717 is a medium-severity denial of service 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
In Libav 12.3, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c has a complex format argument to sscanf.
Weakness: CWE-400
Which versions are affected by CVE-2019-9717?
It affects 1 product.
Products include Libav Libav.
How do I fix CVE-2019-9717?
No fix has been published for CVE-2019-9717 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-9717 being exploited?
There is no known exploitation of CVE-2019-9717 in the wild and no public exploit code.
Other vulnerabilities in Libav Libav
Sources
Also known as GHSA-g8wg-jvvh-f2j6, UBUNTU-CVE-2019-9717.