PT-2021-6490 · FFmpeg+3 · Ffmpeg+3

Published 2020-01-09 · Updated 2023-01-02 · CVE-2020-20896

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Ffmpeg version 4.2.1

Description The issue is related to a Null pointer dereference in the latm write packet function in the libavformat/latmenc.c component of the Ffmpeg library. This could allow attackers to cause a Denial of Service or potentially access confidential data, compromise its integrity, or disrupt service.

Recommendations For Ffmpeg version 4.2.1, consider disabling the latm write packet function as a temporary workaround until a patch is available. Restrict access to the libavformat/latmenc.c component to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2020-1014

ALT-PU-2020-2032

BDU:2022-01740

CVE-2020-20896

DSA-5126-1

OPENSUSE-SU-2021:3521-1

OPENSUSE-SU-2021_3521-1

SUSE-SU-2021:3521-1

SUSE-SU-2023:0005-1

Affected Products

Alt Linux

Astra Linux

Ffmpeg

Suse

References · 49

• 🔥 https://trac.ffmpeg.org/ticket/8273 · Exploit
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2023-0426SE17 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5126-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-20896 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-20896 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-20896 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-20896 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:3521-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-20896 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2023-0727SE47 · Vendor Advisory
• https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/dd01947397b98e94c3f2a79d5820aaf4594f4d3b · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-01740 · Security Note
• https://ubuntu.com/security/CVE-2020-20896 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-20896 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2021:3521-1 · Vendor Advisory