Unrated severityNVD Advisory· Published Aug 18, 2013· Updated Jun 16, 2026
CVE-2013-4073
CVE-2013-4073
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
43cpe:2.3:a:ruby-lang:ruby:1.8.6-26:*:*:*:*:*:*:*+ 41 more
- cpe:2.3:a:ruby-lang:ruby:1.8.6-26:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p160:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p17:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p173:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p174:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p22:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p248:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p249:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p299:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p301:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p302:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p330:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p334:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p352:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p357:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p358:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p370:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p371:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p373:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p71:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p72:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview3:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview4:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p0:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p125:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p194:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p286:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p383:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p385:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p392:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p426:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.3:p429:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.0.0:p0:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.0.0:p195:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.0.0:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.0.0:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.0.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.0.0:rc2:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
14- www.ruby-lang.org/en/news/2013/06/27/hostname-check-bypassing-vulnerability-in-openssl-client-cve-2013-4073/nvdVendor Advisory
- forums.interworx.com/threads/8000-InterWorx-Version-5-0-14-Released-on-Beta-Channel%21nvd
- lists.apple.com/archives/security-announce/2013/Oct/msg00004.htmlnvd
- lists.opensuse.org/opensuse-updates/2013-07/msg00042.htmlnvd
- lists.opensuse.org/opensuse-updates/2013-07/msg00044.htmlnvd
- rhn.redhat.com/errata/RHSA-2013-1090.htmlnvd
- rhn.redhat.com/errata/RHSA-2013-1103.htmlnvd
- rhn.redhat.com/errata/RHSA-2013-1137.htmlnvd
- support.apple.com/kb/HT6150nvd
- www.debian.org/security/2013/dsa-2738nvd
- www.debian.org/security/2013/dsa-2809nvd
- www.ubuntu.com/usn/USN-1902-1nvd
- bugzilla.redhat.com/show_bug.cginvd
- puppet.com/security/cve/cve-2013-4073nvd
News mentions
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