Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index.
archives.neohapsis.com/archives/bugtraq/2011-12/0167.html
blog.pi3.com.pl/?p=277
download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt
jvn.jp/en/jp/JVN37417423/index.html
redmine.lighttpd.net/issues/2370
secunia.com/advisories/47260
www.debian.org/security/2011/dsa-2368
www.exploit-db.com/exploits/18295
www.openwall.com/lists/oss-security/2011/11/29/13
www.openwall.com/lists/oss-security/2011/11/29/8
www.securitytracker.com/id?1026359
bugzilla.redhat.com/show_bug.cgi?id=758624
exchange.xforce.ibmcloud.com/vulnerabilities/71536