Public Date:
979251: CVE-2013-4073 ruby: hostname check bypassing vulnerability in SSL client

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2013-4073 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux OpenStack Platform 3.0 (ruby193-ruby) RHSA-2013:1103 2013-07-23
Red Hat Enterprise Linux version 6 (ruby) RHSA-2013:1090 2013-07-17
Red Hat Enterprise Linux version 5 (ruby) RHSA-2013:1090 2013-07-17
RHOSE Client 1.2 (ruby193-ruby) RHSA-2013:1137 2013-08-05

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 ruby Not affected

External References