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CVE-2011-2701

UnknownEPSS 1.85%

Last modified

CVE-2011-2701 is a vulnerability of currently unknown severity. The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not properly parse replies from OCSP responders, which allows remote attackers to bypass authentication by using the EAP-TLS protocol with a revoked X.509 client certificate.. EPSS estimates a 1.85% chance of exploitation in the next 30 days.

Description

The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not properly parse replies from OCSP responders, which allows remote attackers to bypass authentication by using the EAP-TLS protocol with a revoked X.509 client certificate.

Metrics

EPSS Probability
1.85%

76.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FreeradiusFreeradius2.1.11

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-2701?
The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not properly parse replies from OCSP responders, which allows remote attackers to bypass authentication by using the EAP-TLS protocol with a revoked X.509 client certificate.
How severe is CVE-2011-2701?
Severity scoring for CVE-2011-2701 is pending analysis. The EPSS model estimates a 1.85% probability of exploitation in the next 30 days.
How do I fix CVE-2011-2701?
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-2011-2701?

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

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Source: NVD / NIST