In libavformat/asfdec_f.c in FFmpeg 3.3.3, a DoS in asf_build_simple_index() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted ASF file, which claims a large "ict" field in the header but does not contain sufficient backing data, is provided, the for loop would consume huge CPU and memory resources, since there is no EOF check inside the loop.
http://www.debian.org/security/2017/dsa-3996
http://www.securityfocus.com/bid/100703
https://github.com/FFmpeg/FFmpeg/commit/afc9c683ed9db01edb357bc8c19edad4282b3a97
https://lists.debian.org/debian-lts-announce/2019/02/msg00005.html
Source: MITRE
Published: 2017-09-09
Updated: 2019-03-05
Type: CWE-400
Base Score: 7.1
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 8.6
Severity: HIGH
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.8
Severity: MEDIUM