CVE-2011-2701

Freeradius - Authentication Bypass

Title source: rule

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)

[Vendor Advisory] http://secunia.com/advisories/45425

[Third Party Advisory, VDB Entry] http://securitytracker.com/id?1025833

[Patch] https://bugzilla.redhat.com/show_bug.cgi?id=724815

[Third Party Advisory, VDB Entry] https://exchange.xforce.ibmcloud.com/vulnerabilities/68782

[Various Sources] https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/archive/1/518974/100/0/threaded

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/48880

[Mailing List] http://www.openwall.com/lists/oss-security/2011/07/15/6

[Mailing List] http://www.openwall.com/lists/oss-security/2011/07/18/2

[Mailing List] http://www.openwall.com/lists/oss-security/2011/07/20/9

[Third Party Advisory] http://securityreason.com/securityalert/8325

Scores

EPSS 0.0045

EPSS Percentile 63.4%

Classification

CWE

CWE-287

Status draft

Affected Products (1)

freeradius/freeradius

Timeline

Published Aug 04, 2011

Tracked Since Feb 18, 2026