CVE-2017-14056 Information

Description

In libavformat/rl2.c in FFmpeg 3.3.3 a DoS in rl2_read_header() due to lack of an EOF (End of File) check might cause huge CPU and memory consumption. When a crafted RL2 file which claims a large \frame_count\ field in the header but does not contain sufficient backing data is provided the loops (for offset and size tables) would consume huge CPU and memory resources since there is no EOF check inside these loops.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

http://www.debian.org/security/2017/dsa-3996 http://www.securityfocus.com/bid/100628 https://github.com/FFmpeg/FFmpeg/commit/96f24d1bee7fe7bac08e2b7c74db1a046c9dc0de https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5