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CVE-2008-1891 - Woaded Mediums

Description

Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier 1.8.5 before 1.8.5-p231 1.8.6 before 1.8.6-p230 1.8.7 before 1.8.7-p22 and 1.9.0 before 1.9.0-2 when using NTFS or FAT filesystems allows remote attackers to read arbitrary CGI files via a trailing (1) + (plus) (2) %2b (encoded plus) (3) . (dot) (4) %2e (encoded dot) or (5) %20 (encoded space) character in the URI possibly related to the WEBrick::HTTPServlet::FileHandler and WEBrick::HTTPServer.new functionality and the :DocumentRoot option.

Reference

http://aluigi.altervista.org/adv/webrickcgi-adv.txt http://secunia.com/advisories/29794 http://www.ruby-lang.org/en/news/2008/06/20/arbitrary-code-execution-vulnerabilities/ https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00937.html http://secunia.com/advisories/30831 http://lists.opensuse.org/opensuse-security-announce/2008-08/msg00006.html http://secunia.com/advisories/31687 http://www.mandriva.com/security/advisories?name=MDVSA-2008:141 http://www.mandriva.com/security/advisories?name=MDVSA-2008:140 http://www.vupen.com/english/advisories/2008/1245/references https://exchange.xforce.ibmcloud.com/vulnerabilities/41824