CVE-2009-4016 Information

Description

Integer underflow in the clean_string function in irc_string.c in (1) IRCD-hybrid 7.2.2 and 7.2.3 (2) ircd-ratbox before 2.2.9 and (3) oftc-hybrid before 1.6.8 when flatten_links is disabled allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a LINKS command.

Reference

http://lists.ratbox.org/pipermail/ircd-ratbox/2010-January/000891.html http://secunia.com/advisories/38210 http://secunia.com/advisories/38381 http://secunia.com/advisories/38382 http://secunia.com/advisories/38383 http://security.debian.org/pool/updates/main/i/ircd-hybrid/ircd-hybrid_7.2.2.dfsg.2-4+lenny1.diff.gz http://svn.ircd-hybrid.org:8000/viewcvs.cgi?rev=1044&view=rev http://trac.oftc.net/projects/oftc-hybrid/browser/tags/oftc-hybrid-1.6.8/RELNOTES http://www.debian.org/security/2010/dsa-1980 http://www.securityfocus.com/bid/37978