CVE-2011-2701

FreeRADIUS 2.1.11 - Authentication Bypass via OCSP Reply Parsing

Title source: llm
STIX 2.1

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.

References (11)

Core 11
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/48880
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/68782
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2011/07/15/6
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2011/07/18/2
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/45425
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/518974/100/0/threaded
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/8325
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1025833
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2011/07/20/9

Scores

EPSS 0.0185
EPSS Percentile 76.4%

Details

CWE
CWE-287
Status published
Products (1)
freeradius/freeradius 2.1.11
Published Aug 04, 2011
Tracked Since Feb 18, 2026