An issue was discovered in Suricata 4.1.3. The function ftp_pasv_response lacks a check for the length of part1 and part2, leading to a crash within the ftp/mod.rs file.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://suricata-ids.org/2019/04/30/suricata-4-1-4-released/ | release notes vendor advisory |
| https://redmine.openinfosecfoundation.org/issues/2949 | third party advisory issue tracking exploit |