CVE-2008-1891: Path Traversal
First published: Fri Apr 18 2008(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ruby | <=1.9.0 | |
| Ruby | =1.8.5 | |
| Ruby | =1.8.6 |
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Reference Links
- 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
Frequently Asked Questions
What is the severity of CVE-2008-1891?
CVE-2008-1891 is considered a critical vulnerability due to its potential to allow unauthorized reading of sensitive files.
How do I fix CVE-2008-1891?
To fix CVE-2008-1891, upgrade Ruby to version 1.8.5-p231, 1.8.6-p230, 1.8.7-p22, or any version above 1.9.0-2.
Which versions of Ruby are affected by CVE-2008-1891?
CVE-2008-1891 affects Ruby versions 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.
What types of files can be exposed by CVE-2008-1891?
CVE-2008-1891 can potentially expose arbitrary CGI files to remote attackers due to the directory traversal vulnerability.
Does CVE-2008-1891 affect systems using NTFS or FAT filesystems?
Yes, CVE-2008-1891 notably affects systems utilizing NTFS or FAT filesystems, allowing exploitative access to files.
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