connections.c in lighttpd before 1.4.16 might accept more connections than the configured maximum, which allows remote attackers to cause a denial of service (failed assertion) via a large number of connection attempts.
http://www.vupen.com/english/advisories/2007/2585
http://www.securityfocus.com/bid/24967
http://www.securityfocus.com/archive/1/474131/100/0/threaded
http://www.novell.com/linux/security/advisories/2007_15_sr.html
http://www.debian.org/security/2008/dsa-1609
http://trac.lighttpd.net/trac/ticket/1216
http://trac.lighttpd.net/trac/changeset/1873
http://security.gentoo.org/glsa/glsa-200708-11.xml
http://secunia.com/advisories/31104
http://secunia.com/advisories/26505
http://secunia.com/advisories/26158