CVE-2019-9720: Buffer Overflow
First published: Thu Sep 19 2019(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| libavutil | <=12.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-9720?
CVE-2019-9720 has a medium severity rating, indicating it can lead to significant issues including potential remote code execution.
How do I fix CVE-2019-9720?
To fix CVE-2019-9720, upgrade Libav to version 12.4 or later as it contains the necessary patches.
What types of attacks can exploit CVE-2019-9720?
CVE-2019-9720 can be exploited by attackers using crafted video files in Matroska format to trigger a stack-based buffer overflow.
Which versions of Libav are affected by CVE-2019-9720?
CVE-2019-9720 affects Libav versions up to and including 12.3.
What component of Libav is vulnerable in CVE-2019-9720?
The vulnerability in CVE-2019-9720 exists in the subtitle decoder, specifically in the srt_to_ass function of the libavcodec library.
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