The gnu regular expression code in file 4.20 allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted document with a large number of line feed characters, which is not well handled by OS/2 REXX regular expressions that use wildcards, as originally reported for AMaViS.
- http://sourceforge.net/mailarchive/forum.php?thread_name=755AF709E5B77E6EA58479D5%40foxx.lsit.ucsb.edu&forum_name=amavis-user
No PoCs found on GitHub currently.