CVE-2008-3656 Information

Description

Algorithmic complexity vulnerability in the WEBrick::HTTPUtils.split_header_value function in WEBrick::HTTP::DefaultFileHandler in WEBrick in Ruby 1.8.5 and earlier 1.8.6 through 1.8.6-p286 1.8.7 through 1.8.7-p71 and 1.9 through r18423 allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted HTTP request that is processed by a backtracking regular expression.

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494401 http://lists.apple.com/archives/security-announce/2009/May/msg00002.html http://secunia.com/advisories/31430 http://secunia.com/advisories/31697 http://secunia.com/advisories/32165 http://secunia.com/advisories/32219 http://secunia.com/advisories/32255 http://secunia.com/advisories/32256 http://secunia.com/advisories/32371 http://secunia.com/advisories/33178 http://secunia.com/advisories/35074 http://security.gentoo.org/glsa/glsa-200812-17.xml http://support.apple.com/kb/HT3549 http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0264 http://www.debian.org/security/2008/dsa-1651 http://www.debian.org/security/2008/dsa-1652 http://www.redhat.com/support/errata/RHSA-2008-0897.html http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/ http://www.securityfocus.com/archive/1/495884/100/0/threaded http://www.securityfocus.com/bid/30644 http://www.securitytracker.com/id?1020654 http://www.us-cert.gov/cas/techalerts/TA09-133A.html http://www.vupen.com/english/advisories/2008/2334 http://www.vupen.com/english/advisories/2009/1297 https://exchange.xforce.ibmcloud.com/vulnerabilities/44371 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A9682 https://usn.ubuntu.com/651-1/ https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html