CVE-2009-0161

Name: CVE-2009-0161
Creator: NVD / NIST
Published: 2009-05-13T15:30:00.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.29%

Last modified Jun 16, 2026

CVE-2009-0161 is a vulnerability of currently unknown severity. The OpenSSL::OCSP module for Ruby in Apple Mac OS X 10.5 before 10.5.7 misinterprets an unspecified invalid response as a successful OCSP certificate validation, which might allow remote attackers to spoof certificate authentication via a revoked certificate.. EPSS estimates a 2.29% chance of exploitation in the next 30 days.

Description

The OpenSSL::OCSP module for Ruby in Apple Mac OS X 10.5 before 10.5.7 misinterprets an unspecified invalid response as a successful OCSP certificate validation, which might allow remote attackers to spoof certificate authentication via a revoked certificate.

Metrics

EPSS Probability

2.29%

81.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	10.5.0
Apple	Mac Os X	10.5.1
Apple	Mac Os X	10.5.2
Apple	Mac Os X	10.5.3
Apple	Mac Os X	10.5.4
Apple	Mac Os X	10.5.5
Apple	Mac Os X	10.5.6
Apple	Mac Os X Server	10.4.11
Apple	Mac Os X Server	10.5.0
Apple	Mac Os X Server	10.5.1
Apple	Mac Os X Server	10.5.2
Apple	Mac Os X Server	10.5.3
Apple	Mac Os X Server	10.5.4
Apple	Mac Os X Server	10.5.6

References

http://lists.apple.com/archives/security-announce/2009/May/msg00002.htmlPatch, Vendor Advisory
http://secunia.com/advisories/35074
http://support.apple.com/kb/HT3549Patch, Vendor Advisory
http://www.securityfocus.com/bid/34926
http://www.us-cert.gov/cas/techalerts/TA09-133A.htmlUS Government Resource
http://www.vupen.com/english/advisories/2009/1297
https://exchange.xforce.ibmcloud.com/vulnerabilities/50592
http://lists.apple.com/archives/security-announce/2009/May/msg00002.htmlPatch, Vendor Advisory
http://secunia.com/advisories/35074
http://support.apple.com/kb/HT3549Patch, Vendor Advisory
http://www.securityfocus.com/bid/34926
http://www.us-cert.gov/cas/techalerts/TA09-133A.htmlUS Government Resource
http://www.vupen.com/english/advisories/2009/1297
https://exchange.xforce.ibmcloud.com/vulnerabilities/50592

Timeline

Published: May 13, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-0161?

How severe is CVE-2009-0161?

Severity scoring for CVE-2009-0161 is pending analysis. The EPSS model estimates a 2.29% probability of exploitation in the next 30 days.

How do I fix CVE-2009-0161?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0161?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST