Heap-based buffer overflow in FFmpeg - CVE-2019-17542

Vulnerability identifier: #VU29634

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-17542

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the vqa_decode_chunk because of an out-of-array access in vqa_decode_init in libavcodec/vqavideo.c. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

FFmpeg
Gentoo Linux
Ubuntu
ffmpeg (Alpine package)
ffmpeg (Debian package)
libswscale-ffmpeg3 (Ubuntu package)
libavcodec-ffmpeg-extra56 (Ubuntu package)
libavcodec-ffmpeg56 (Ubuntu package)
libavdevice-ffmpeg56 (Ubuntu package)
libavfilter-ffmpeg5 (Ubuntu package)
libavformat-ffmpeg56 (Ubuntu package)
libavresample-ffmpeg2 (Ubuntu package)
ffmpeg (Ubuntu package)
libavutil-ffmpeg54 (Ubuntu package)
libpostproc-ffmpeg53 (Ubuntu package)
libswresample-ffmpeg1 (Ubuntu package)
libavdevice57 (Ubuntu package)
libswscale4 (Ubuntu package)
libswresample2 (Ubuntu package)
libpostproc54 (Ubuntu package)
libavutil55 (Ubuntu package)
libavresample3 (Ubuntu package)
libavformat57 (Ubuntu package)
libavfilter6 (Ubuntu package)
libavfilter-extra6 (Ubuntu package)
libavcodec57 (Ubuntu package)
libavcodec-extra57 (Ubuntu package)
libpostproc55 (Ubuntu package)
libavutil56 (Ubuntu package)
libavresample4 (Ubuntu package)
libavformat58 (Ubuntu package)
libavfilter7 (Ubuntu package)
libavfilter-extra7 (Ubuntu package)
libavdevice58 (Ubuntu package)
libavcodec58 (Ubuntu package)
libavcodec-extra58 (Ubuntu package)
libswresample3 (Ubuntu package)
libswscale5 (Ubuntu package)

Install update from vendor's website.

FFmpeg - update to 4.2
ffmpeg (Alpine package) - update to 4.0.6-r0
ffmpeg (Debian package) - update to 7:4.1.6-1~deb10u1
libswscale-ffmpeg3 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libavcodec-ffmpeg-extra56 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libavcodec-ffmpeg56 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libavdevice-ffmpeg56 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libavfilter-ffmpeg5 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libavformat-ffmpeg56 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libavresample-ffmpeg2 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
ffmpeg (Ubuntu package) - addressed in versions 7:2.8.17-0ubuntu0.1, 7:3.4.8-0ubuntu0.2, 7:4.2.4-1ubuntu0.1
libavutil-ffmpeg54 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libpostproc-ffmpeg53 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libswresample-ffmpeg1 (Ubuntu package) - update to 7:2.8.17-0ubuntu0.1
libavdevice57 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libswscale4 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libswresample2 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libpostproc54 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavutil55 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavresample3 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavformat57 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavfilter6 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavfilter-extra6 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavcodec57 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavcodec-extra57 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libpostproc55 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavutil56 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavresample4 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavformat58 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavfilter7 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavfilter-extra7 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavdevice58 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavcodec58 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libavcodec-extra58 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libswresample3 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
libswscale5 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15919
• https://github.com/FFmpeg/FFmpeg/commit/02f909dc24b1f05cfbba75077c7707b905e63cd2
• https://lists.debian.org/debian-lts-announce/2019/12/msg00003.html
• https://security.gentoo.org/glsa/202003-65
• https://www.debian.org/security/2020/dsa-4722

• Remote code execution in FFmpeg
• Debian update for ffmpeg
• Heap-based buffer overflow in ffmpeg (Alpine package)
• Gentoo update for FFmpeg
• Ubuntu update for ffmpeg