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CVE-2017-14170

Published: 7 September 2017

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.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
ffmpeg
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(7:3.3.4-1)
trusty Does not exist

upstream Needs triage

xenial
Released (7:2.8.14-0ubuntu0.16.04.1)
zesty Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H