CVE-2020-13904

MEDIUM

FFmpeg 2.8 and 4.2.3 - Use-After-Free via Crafted EXTINF Duration in m3u8 File

Title source: llm
STIX 2.1

Description

FFmpeg 2.8 and 4.2.3 has a use-after-free via a crafted EXTINF duration in an m3u8 file because parse_playlist in libavformat/hls.c frees a pointer, and later that pointer is accessed in av_probe_input_format3 in libavformat/format.c.

References (7)

Core 7
Core References
Exploit, Issue Tracking, Vendor Advisory x_refsource_misc
https://trac.ffmpeg.org/ticket/8673
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4722
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/07/msg00022.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4431-1/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202007-58

Scores

CVSS v3 5.5
EPSS 0.0047
EPSS Percentile 65.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Details

CWE
CWE-416
Status published
Products (7)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 20.04
debian/debian_linux 9.0
debian/debian_linux 10.0
ffmpeg/ffmpeg 2.8
ffmpeg/ffmpeg 4.2.3
Published Jun 07, 2020
Tracked Since Feb 18, 2026