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.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
| Link | Tags |
|---|---|
| http://secunia.com/advisories/29794 | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2008-08/msg00006.html | vendor advisory |
| http://www.mandriva.com/security/advisories?name=MDVSA-2008:141 | vendor advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/41824 | vdb entry |
| http://secunia.com/advisories/31687 | third party advisory |
| http://aluigi.altervista.org/adv/webrickcgi-adv.txt | |
| https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00937.html | vendor advisory |
| http://www.mandriva.com/security/advisories?name=MDVSA-2008:140 | vendor advisory |
| http://secunia.com/advisories/30831 | third party advisory |
| http://www.vupen.com/english/advisories/2008/1245/references | vdb entry |
| http://www.ruby-lang.org/en/news/2008/06/20/arbitrary-code-execution-vulnerabilities/ |