Vulnerability Details : CVE-2017-14171
In libavformat/nsvdec.c in FFmpeg 2.4 and 3.3.3, a DoS in nsv_parse_NSVf_header() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted NSV file, which claims a large "table_entries_used" field in the header but does not contain sufficient backing data, is provided, the loop over 'table_entries_used' would consume huge CPU resources, since there is no EOF check inside the loop.
Vulnerability category: Denial of service
Products affected by CVE-2017-14171
- cpe:2.3:a:ffmpeg:ffmpeg:3.3.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-14171
0.42%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-14171
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2017-14171
-
The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-14171
-
https://github.com/FFmpeg/FFmpeg/commit/c24bcb553650b91e9eff15ef6e54ca73de2453b7
avformat/nsvdec: Fix DoS due to lack of eof check in nsvs_file_offset… · FFmpeg/FFmpeg@c24bcb5 · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://www.debian.org/security/2017/dsa-3996
Debian -- Security Information -- DSA-3996-1 ffmpeg
-
https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
[SECURITY] [DLA 1630-1] libav security update
-
http://www.securityfocus.com/bid/100706
FFmpeg CVE-2017-14171 Denial of Service Vulnerability
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