CVE-2011-0015 Information

Description

Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not properly check the amount of compression in zlib-compressed data which allows remote attackers to cause a denial of service via a large compression factor.

Reference

http://archives.seul.org/or/announce/Jan-2011/msg00000.html http://blog.torproject.org/blog/tor-02129-released-security-patches http://secunia.com/advisories/42905 http://secunia.com/advisories/42907 http://www.debian.org/security/2011/dsa-2148 http://www.openwall.com/lists/oss-security/2011/01/18/7 http://www.securityfocus.com/bid/45832 http://www.securitytracker.com/id?1024980 http://www.vupen.com/english/advisories/2011/0131 http://www.vupen.com/english/advisories/2011/0132 https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog https://trac.torproject.org/projects/tor/ticket/2324