Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ruby-Lang | Ruby | <= 1.9.0 |
Related Weaknesses (CWE)
References
- http://aluigi.altervista.org/adv/webrickcgi-adv.txt
- http://lists.opensuse.org/opensuse-security-announce/2008-08/msg00006.html
- http://secunia.com/advisories/29794Vendor Advisory
- http://secunia.com/advisories/30831
- http://secunia.com/advisories/31687
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:140
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:141
- http://www.ruby-lang.org/en/news/2008/06/20/arbitrary-code-execution-vulnerabili
- http://www.vupen.com/english/advisories/2008/1245/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41824
- https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00937.html
- http://aluigi.altervista.org/adv/webrickcgi-adv.txt
- http://lists.opensuse.org/opensuse-security-announce/2008-08/msg00006.html
- http://secunia.com/advisories/29794Vendor Advisory
- http://secunia.com/advisories/30831
FAQ
What is CVE-2008-1891?
CVE-2008-1891 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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 files...
How severe is CVE-2008-1891?
CVE-2008-1891 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2008-1891?
Check the references section above for vendor advisories and patch information. Affected products include: Ruby-Lang Ruby.