CVE-2017-14223

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-09-09 · updated 2026-06-17
Weakness: CWE-400

Description

In libavformat/asfdec_f.c in FFmpeg 3.3.3, a DoS in asf_build_simple_index() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted ASF file, which claims a large "ict" field in the header but does not contain sufficient backing data, is provided, the for loop would consume huge CPU and memory resources, since there is no EOF check inside the loop.

Affected products

Debian Linux: 8.0, 9.0
FFmpeg: 3.3.3

References

http://www.debian.org/security/2017/dsa-3996
http://www.securityfocus.com/bid/100703
https://github.com/FFmpeg/FFmpeg/commit/afc9c683ed9db01edb357bc8c19edad4282b3a97
https://lists.debian.org/debian-lts-announce/2019/02/msg00005.html
http://www.debian.org/security/2017/dsa-3996
http://www.securityfocus.com/bid/100703
https://github.com/FFmpeg/FFmpeg/commit/afc9c683ed9db01edb357bc8c19edad4282b3a97
https://lists.debian.org/debian-lts-announce/2019/02/msg00005.html

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