CVE-2019-9719
HIGHLibav < 12.3 - Stack-based Buffer Overflow in Subtitle Decoder
Title source: llmDescription
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
References (4)
Core 4
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/libav/libav/blob/df744e3cf66548c9167ea857104a29d2ea92819e/libavcodec/srtdec.c#L113
Third Party Advisory x_refsource_misc
https://github.com/libav/libav/commits/master/libavcodec/srtdec.c
Third Party Advisory x_refsource_misc
https://lgtm.com/security/
Exploit, Third Party Advisory x_refsource_misc
https://lgtm.com/projects/g/libav/libav/snapshot/f5f553ca3bdca0c97dd08bbf002f0d8cb193788b/files/libavcodec/srtdec.c?sort=name&dir=ASC&mode=heatmap#xeec693aa6d85853b:1
Scores
CVSS v3
8.8
EPSS
0.0203
EPSS Percentile
78.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (1)
libav/libav
< 12.3
Published
Sep 19, 2019
Tracked Since
Feb 18, 2026