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Last updated: 10/20/2014 5:47:35 AM

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Vulnerability Summary for CVE-2009-0642

Original release date: 02/20/2009
Last revised: 08/21/2010
Source: US-CERT/NIST

Overview

ext/openssl/ossl_ocsp.c in Ruby 1.8 and 1.9 does not properly check the return value from the OCSP_basic_verify function, which might allow remote attackers to successfully present an invalid X.509 certificate, possibly involving a revoked certificate.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.8 (MEDIUM) (AV:N/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: BID
Name: 33769
External Source: OVAL
Name: oval:org.mitre.oval:def:11450
External Source: REDHAT
Name: RHSA-2009:1140
External Source: SECUNIA
Name: 35937
External Source: SECTRACK
Name: 1022505
External Source: XF
Name: ruby-ocspbasicverify-spoofing(48761)
External Source: SECUNIA
Name: 33750
External Source: MISC
Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513528
External Source: CONFIRM
Name: http://redmine.ruby-lang.org/issues/show/1091
External Source: UBUNTU
Name: USN-805-1
External Source: MANDRIVA
Name: MDVSA-2009:193
External Source: SECUNIA
Name: 35699

References to Check Content

Identifier: oval:org.mitre.oval:def:11450
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Technical Details

Vulnerability Type (View All)