CVE-2017-14170 Information

Description

In libavformat/mxfdec.c in FFmpeg 3.3.3 a DoS in mxf_read_index_entry_array() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted MXF file which claims a large \nb_index_entries\ field in the header but does not contain sufficient backing data is provided the loop would consume huge CPU resources since there is no EOF check inside the loop. Moreover this big loop can be invoked multiple times if there is more than one applicable data segment in the crafted MXF file.

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/100700 https://github.com/FFmpeg/FFmpeg/commit/900f39692ca0337a98a7cf047e4e2611071810c2 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