CVE-2017-14170 - In libavformat/mxfdec.c in FFmpeg 3.3.3 -> 2.4, a DoS in mxf_read_index_entry_array() due to lack of

CVE-2017-14170

Summary

In libavformat/mxfdec.c in FFmpeg 3.3.3 -> 2.4, 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.

References

Vulnerable Configurations

cpe:2.3:a:ffmpeg:ffmpeg:3.3.3:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:3.3.3:*:*:*:*:*:*:*

CVSS

Base:	7.1 (as of 04-01-2021 - 19:15)
Impact:
Exploitability:

CWE

CWE-834

CAPEC

Access

Vector	Complexity	Authentication
NETWORK	MEDIUM	NONE

Impact

Confidentiality	Integrity	Availability
NONE	NONE	COMPLETE

cvss-vector via4

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

refmap via4

bid	100700
confirm	https://github.com/FFmpeg/FFmpeg/commit/900f39692ca0337a98a7cf047e4e2611071810c2
debian	DSA-3996
misc	https://github.com/FFmpeg/FFmpeg/commit/f173cdfe669556aa92857adafe60cbe5f2aa1210
mlist	[debian-lts-announce] 20190107 [SECURITY] [DLA 1630-1] libav security update

Last major update

04-01-2021 - 19:15

Published

07-09-2017 - 06:29

Last modified

04-01-2021 - 19:15