CVE-2009-0642
MEDIUM severity · CVSS 6.8 · Improper authentication
6.8CVSS MEDIUM
Summary
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 & exploitability
Attack vectorNetwork
Attack complexity—
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)3%
AV:N/AC:M/Au:N/C:P/I:P/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513528
- http://secunia.com/advisories/33750
- http://secunia.com/advisories/35699
- http://secunia.com/advisories/35937
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:193
- http://www.redhat.com/support/errata/RHSA-2009-1140.html
- http://www.securityfocus.com/bid/33769
- http://redmine.ruby-lang.org/issues/show/1091Exploit