Vulnerability Description
The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ruby-Lang | Ruby | 1.8.6-26 |
Related Weaknesses (CWE)
References
- http://forums.interworx.com/threads/8000-InterWorx-Version-5-0-14-Released-on-Be
- http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
- http://lists.opensuse.org/opensuse-updates/2013-07/msg00042.html
- http://lists.opensuse.org/opensuse-updates/2013-07/msg00044.html
- http://rhn.redhat.com/errata/RHSA-2013-1090.html
- http://rhn.redhat.com/errata/RHSA-2013-1103.html
- http://rhn.redhat.com/errata/RHSA-2013-1137.html
- http://support.apple.com/kb/HT6150
- http://www.debian.org/security/2013/dsa-2738
- http://www.debian.org/security/2013/dsa-2809
- http://www.ruby-lang.org/en/news/2013/06/27/hostname-check-bypassing-vulnerabiliVendor Advisory
- http://www.ubuntu.com/usn/USN-1902-1
- https://bugzilla.redhat.com/show_bug.cgi?id=979251
- https://puppet.com/security/cve/cve-2013-4073
- http://forums.interworx.com/threads/8000-InterWorx-Version-5-0-14-Released-on-Be
FAQ
What is CVE-2013-4073?
CVE-2013-4073 is a vulnerability with a CVSS score of 6.8 (MEDIUM). The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '\0' character in...
How severe is CVE-2013-4073?
CVE-2013-4073 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2013-4073?
Check the references section above for vendor advisories and patch information. Affected products include: Ruby-Lang Ruby.