CVE-2017-14170
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-14170
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-14170.html
Vendor advisory: cve@mitre.org — https://github.com/FFmpeg/FFmpeg/commit/900f39692ca0337a98a7cf047e4e2611071810c2
Vendor advisory: arch — https://security.archlinux.org/ASA-201709-10
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| arch | fixed | 1:3.3.4-1 | |
| debian | bookworm | fixed | 7:3.3.4-1 |
| debian | bullseye | fixed | 7:3.3.4-1 |
| debian | forky | fixed | 7:3.3.4-1 |
| debian | sid | fixed | 7:3.3.4-1 |
| debian | trixie | fixed | 7:3.3.4-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| ffmpeg | ffmpeg | 3.3.3 | |
References
- https://security.archlinux.org/ASA-201709-10
- http://www.debian.org/security/2017/dsa-3996
- http://www.securityfocus.com/bid/100700
- https://github.com/FFmpeg/FFmpeg/commit/900f39692ca0337a98a7cf047e4e2611071810c2
- https://github.com/FFmpeg/FFmpeg/commit/f173cdfe669556aa92857adafe60cbe5f2aa1210
- https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
- https://www.suse.com/security/cve/CVE-2017-14170.html
- https://security-tracker.debian.org/tracker/CVE-2017-14170
CWEs
CWE-834
Verify integrity in audit chain (admin only). AS-IS.