NULL pointer dereference in FFmpeg - CVE-2019-11338

Vulnerability identifier: #VU18318

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-11338

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error when detecting duplicate first slices within libavcodec/hevcdec.c file. A remote attacker can trigger denial of service conditions via crafted HEVC data.

FFmpeg
ffmpeg (Alpine package)
ffmpeg (Ubuntu 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)
libavutil-ffmpeg54 (Ubuntu package)
libpostproc-ffmpeg53 (Ubuntu package)
libswresample-ffmpeg1 (Ubuntu package)
libavcodec57 (Ubuntu package)
libswscale4 (Ubuntu package)
libswresample2 (Ubuntu package)
libpostproc54 (Ubuntu package)
libavutil55 (Ubuntu package)
libavresample3 (Ubuntu package)
libavformat57 (Ubuntu package)
libavfilter6 (Ubuntu package)
libavdevice57 (Ubuntu package)
libavfilter-extra6 (Ubuntu package)
libavcodec-extra57 (Ubuntu package)
libswresample3 (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)
libswscale5 (Ubuntu package)
Ubuntu

Install update from vendor's repository.

ffmpeg (Alpine package) - update to 3.4.6-r0
ffmpeg (Ubuntu package) - addressed in versions 7:2.8.17-0ubuntu0.1, 7:3.4.6-0ubuntu0.18.04.1, 7:3.4.8-0ubuntu0.2, 7:4.0.4-0ubuntu1, 7:4.1.3-0ubuntu1, 7:4.2.4-1ubuntu0.1
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
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
libavcodec57 (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
libavdevice57 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavfilter-extra6 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libavcodec-extra57 (Ubuntu package) - update to 7:3.4.8-0ubuntu0.2
libswresample3 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1
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
libswscale5 (Ubuntu package) - update to 7:4.2.4-1ubuntu0.1

• https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7e

• NULL pointer dereference in FFmpeg
• Ubuntu update for FFmpeg
• NULL pointer dereference in ffmpeg (Alpine package)
• Ubuntu update for ffmpeg