lighttpd 1.4.12 and 1.4.13 allows remote attackers to cause a denial of service (cpu and resource consumption) by disconnecting while lighttpd is parsing CRLF sequences, which triggers an infinite loop and file descriptor consumption.
https://issues.rpath.com/browse/RPL-1218
https://exchange.xforce.ibmcloud.com/vulnerabilities/33671
http://www.vupen.com/english/advisories/2007/1399
http://www.securityfocus.com/bid/23515
http://www.securityfocus.com/archive/1/466464/30/6900/threaded
http://www.novell.com/linux/security/advisories/2007_007_suse.html
http://www.lighttpd.net/assets/2007/4/13/lighttpd_sa2007_01.txt
http://www.debian.org/security/2007/dsa-1303
http://security.gentoo.org/glsa/glsa-200705-07.xml
http://secunia.com/advisories/25613
http://secunia.com/advisories/25166
http://secunia.com/advisories/24995