CVE-2011-4957 Information

Description

The make_clickable function in wp-includes/formatting.php in WordPress before 3.1.1 does not properly check URLs before passing them to the PCRE library which allows remote attackers to cause a denial of service (crash) via a comment with a crafted URL that triggers many recursive calls.

Reference

http://core.trac.wordpress.org/ticket/16892 http://secunia.com/advisories/44038 http://secunia.com/advisories/49138 http://wordpress.org/news/2011/04/wordpress-3-1-1/ http://www.debian.org/security/2012/dsa-2470 http://www.openwall.com/lists/oss-security/2012/04/19/17 http://www.openwall.com/lists/oss-security/2012/04/19/6