Memory leak in the http_request_parse function in request.c in lighttpd before 1.4.20 allows remote attackers to cause a denial of service (memory consumption) via a large number of requests with duplicate request headers.
https://exchange.xforce.ibmcloud.com/vulnerabilities/45471
http://www.vupen.com/english/advisories/2008/2741
http://www.securityfocus.com/bid/31434
http://www.securityfocus.com/archive/1/497932/100/0/threaded
http://www.openwall.com/lists/oss-security/2008/09/26/5
http://www.lighttpd.net/security/lighttpd_sa_2008_07.txt
http://www.debian.org/security/2008/dsa-1645
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0309
http://wiki.rpath.com/Advisories:rPSA-2008-0309
http://trac.lighttpd.net/trac/ticket/1774
http://trac.lighttpd.net/trac/changeset/2305
http://security.gentoo.org/glsa/glsa-200812-04.xml
http://secunia.com/advisories/32972
http://secunia.com/advisories/32834
http://secunia.com/advisories/32480
http://secunia.com/advisories/32132
http://secunia.com/advisories/32069
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00002.html