CVE-2011-4362 Information

Description

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.

Reference

http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html http://blog.pi3.com.pl/?p=277 http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt http://redmine.lighttpd.net/issues/2370 http://secunia.com/advisories/47260 http://www.debian.org/security/2011/dsa-2368 http://www.exploit-db.com/exploits/18295 http://www.openwall.com/lists/oss-security/2011/11/29/13 http://www.openwall.com/lists/oss-security/2011/11/29/8 http://www.securitytracker.com/id?1026359 https://bugzilla.redhat.com/show_bug.cgi?id=758624 https://exchange.xforce.ibmcloud.com/vulnerabilities/71536