CVE-2008-1891: ruby-lang ruby

Vulnerability summary

CVE-2008-1891 is a medium (CVSS 5.0) vulnerability in ruby-lang ruby. EPSS estimates a 2.79% chance of exploitation in the next 30 days, higher than 86.4% of scored vulnerabilities.

Timeline

1. 18-04-2008
   PublishedVulnerability first disclosed.
2. 07-08-2024
   Last modifiedVulnerability information updated.

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.

• CWE-22Improper Limitation of a Pathname to a Restricted DirectoryThe 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.