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Category:   Application (Generic)  >   Ruby Vendors:   Matsumoto, Yukihiro
Ruby OCSP_basic_verify() Validation Flaw Lets Remote Users Conduct Certificate Spoofing Attacks
SecurityTracker Alert ID:  1022505
SecurityTracker URL:  http://securitytracker.com/id/1022505
CVE Reference:   CVE-2009-0642   (Links to External Site)
Date:  Jul 3 2009
Impact:   Modification of authentication information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.8.x, 1.9.x
Description:   A vulnerability was reported in Ruby. A remote user can conduct certificate spoofing attacks.

The OCSP_basic_verify() function in 'ext/openssl/ossl_ocsp.c' does not properly validate X.509 certificates. A remote user may be able to present an invalid certificate that will not be detected as invalid by the target user.

Impact:   A remote user can conduct certificate spoofing attacks.
Solution:   The vendor has issued a source code fix.
Vendor URL:  www.ruby-lang.org/ (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jul 3 2009 (Red Hat Issues Fix) Ruby OCSP_basic_verify() Validation Flaw Lets Remote Users Conduct Certificate Spoofing Attacks
Red Hat has released a fix for Red Hat Enterprise Linux 4 and 5.



 Source Message Contents



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