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CVE-2011-2701

Good to know:

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Date: August 3, 2011

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.

Language: C

Severity Score

Related Resources (13)

http://www.openwall.com/lists/oss-security/2011/07/18/2
http://www.openwall.com/lists/oss-security/2011/07/15/6
https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/68782
http://securityreason.com/securityalert/8325
http://www.openwall.com/lists/oss-security/2011/07/20/9
https://nvd.nist.gov/vuln/detail/CVE-2011-2701
http://secunia.com/advisories/45425
http://www.securityfocus.com/archive/1/518974/100/0/threaded
http://www.securityfocus.com/bid/48880
https://bugzilla.redhat.com/show_bug.cgi?id=724815
http://securitytracker.com/id?1025833
https://www.mend.io/vulnerability-database/CVE-2011-2701

Severity Score

Weakness Type (CWE)

Authentication Issues

CWE-287

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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