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CVE-2015-8661

Published: 24 December 2015

The h264_slice_header_init function in libavcodec/h264_slice.c in FFmpeg before 2.8.3 does not validate the relationship between the number of threads and the number of slices, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted H.264 data.

Priority

Medium

Cvss 3 Severity Score

8.3

Score breakdown

Status

Package Release Status
libav
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(code not present)
precise Not vulnerable
(code not present)
upstream Needs triage

vivid Ignored
(end of life)
wily Does not exist

ffmpeg
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (2.7.4,2.5.9)
vivid Not vulnerable
(7:2.5.9-0ubuntu0.15.04.1)
wily
Released (7:2.7.4-0ubuntu0.15.10.1)
Patches:
upstream: http://git.videolan.org/?p=ffmpeg.git;a=commit;h=4ea4d2f438c9a7eba37980c9a87be4b34943e4d5

Severity score breakdown

Parameter Value
Base score 8.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L