CVE-2013-6890 Information

Description

denyhosts 2.6 uses an incorrect regular expression when analyzing authentication logs which allows remote attackers to cause a denial of service (incorrect block of IP addresses) via crafted login names.

Reference

http://seclists.org/oss-sec/2013/q4/535 http://secunia.com/advisories/56239 http://www.debian.org/security/2013/dsa-2826 https://bugzilla.redhat.com/show_bug.cgi?id=1045982