The BEGIN regular expression in the awk script detector in magic/Magdir/commands in file before 5.15 uses multiple wildcards with unlimited repetitions, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted ASCII file that triggers a large amount of backtracking, as demonstrated via a file with many newline characters.
Link | Tags |
---|---|
https://github.com/file/file/commit/ef2329cf71acb59204dd981e2c6cce6c81fe467c | exploit third party advisory patch |
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=703993 | issue tracking third party advisory |
http://bugs.gw.com/view.php?id=164 | issue tracking patch exploit third party advisory broken link |
http://support.apple.com/kb/HT6443 | third party advisory |
http://rhn.redhat.com/errata/RHSA-2014-1765.html | third party advisory vendor advisory |
http://www.debian.org/security/2014/dsa-2873 | third party advisory vendor advisory |