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CVE-2013-4073
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…
Medium6.8EPSS 2.8%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 2.8% · top 14% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
n/a
- affected n/a
References (14)
- DSA-2738 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-1902-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://forums.interworx.com/threads/8000-InterWorx-Version-5-0-14-Released-on-Beta-Channel%21 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2013:1090 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2013:1103 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- APPLE-SA-2013-10-22-3 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- http://support.apple.com/kb/HT6150 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://puppet.com/security/cve/cve-2013-4073 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=979251 (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2013:1181 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- RHSA-2013:1137 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2013:1186 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- DSA-2809 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://www.ruby-lang.org/en/news/2013/06/27/hostname-check-bypassing-vulnerability-in-openssl-client-cve-2013-4073/ (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2013-4073)Record last updated .