CVE-2009-0642

Public Exploit

Description

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.

Category

6.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.46% Top 25%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory mandriva.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/35937 third party advisory
http://redmine.ruby-lang.org/issues/show/1091 exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/48761 vdb entry
http://www.redhat.com/support/errata/RHSA-2009-1140.html vendor advisory
http://www.ubuntu.com/usn/USN-805-1 vendor advisory
http://www.securityfocus.com/bid/33769 vdb entry
http://www.securitytracker.com/id?1022505 vdb entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11450 vdb entry signature
http://secunia.com/advisories/35699 third party advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:193 vendor advisory
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513528
http://secunia.com/advisories/33750 third party advisory

Frequently Asked Questions

What is the severity of CVE-2009-0642?
CVE-2009-0642 has been scored as a medium severity vulnerability.
How to fix CVE-2009-0642?
To fix CVE-2009-0642, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-0642 being actively exploited in the wild?
It is possible that CVE-2009-0642 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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