Unspecified vulnerability in (1) apreq_parse_headers and (2) apreq_parse_urlencoded functions in Apache2::Request (Libapreq2) before 2.07 allows remote attackers to cause a denial of service (CPU consumption) via unknown attack vectors that result in quadratic computational complexity.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24917
http://www.vupen.com/english/advisories/2006/0645
http://www.securityfocus.com/bid/16710
http://www.gentoo.org/security/en/glsa/glsa-200604-08.xml
http://www.debian.org/security/2006/dsa-1000
http://svn.apache.org/viewcvs.cgi/httpd/apreq/tags/v2_07/CHANGES?rev=376998&view=markup
http://securityreason.com/securityalert/737
http://secunia.com/advisories/19658