CVE Vulnerabilities

CVE-2019-17539

NULL Pointer Dereference

Published: Oct 14, 2019 | Modified: Jun 10, 2021
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

In FFmpeg before 4.2, avcodec_open2 in libavcodec/utils.c allows a NULL pointer dereference and possibly unspecified other impact when there is no valid close function pointer.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Ffmpeg Ffmpeg * 3.4.7 (excluding)
Ffmpeg Ffmpeg 4.0 (including) 4.0.5 (excluding)
Ffmpeg Ffmpeg 4.1 (including) 4.1.5 (excluding)
Ffmpeg Ubuntu bionic *
Ffmpeg Ubuntu disco *
Ffmpeg Ubuntu eoan *
Ffmpeg Ubuntu esm-apps/bionic *
Ffmpeg Ubuntu trusty *
Libav Ubuntu trusty *
Libav Ubuntu trusty/esm *

Potential Mitigations

References