CVE-2011-2701

N/A Unknown
Published: August 04, 2011 Modified: April 29, 2026
View on NVD

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.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://secunia.com/advisories/45425
Source: secalert@redhat.com
Vendor Advisory
http://securitytracker.com/id?1025833
Source: secalert@redhat.com
http://www.securityfocus.com/bid/48880
Source: secalert@redhat.com
http://secunia.com/advisories/45425
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://securityreason.com/securityalert/8325
Source: af854a3a-2127-422b-91ae-364da2661108
http://securitytracker.com/id?1025833
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2011/07/15/6
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2011/07/18/2
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2011/07/20/9
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/archive/1/518974/100/0/threaded
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/48880
Source: af854a3a-2127-422b-91ae-364da2661108
https://bugzilla.redhat.com/show_bug.cgi?id=724815
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/68782
Source: af854a3a-2127-422b-91ae-364da2661108

22 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
1.8%
76th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

freeradius