{"id":"CVE-2011-2701","aliases":["EUVD-2011-2682","GHSA-3m7r-w3xm-qwcj"],"status":"published","title":"The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not...","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.","severity":{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01847,"percentile":0.79198,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2011-08-04T01:00:00Z","modified":"2026-06-16T23:31:49Z","products":[{"vendor":"freeradius","product":"freeradius"}],"references":[{"url":"http://www.securityfocus.com/bid/48880","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/68782","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2011/07/15/6","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2011/07/18/2","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://secunia.com/advisories/45425","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/archive/1/518974/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://securityreason.com/securityalert/8325","tags":["third-party-advisory","x_refsource_SREASON","x_transferred"]},{"url":"http://securitytracker.com/id?1025833","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=724815","tags":["x_refsource_MISC","x_transferred","Patch"]},{"url":"http://www.openwall.com/lists/oss-security/2011/07/20/9","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-2701"},{"url":"https://github.com/advisories/GHSA-3m7r-w3xm-qwcj"}],"sources":{"cve":[{"id":"CVE-2011-2701","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.","status":"published","published":"2011-08-04T01:00:00Z","modified":"2024-08-06T23:08:23.745Z","updated_at":"2026-11-02T14:35:36.968002Z"}],"euvd":[{"id":"EUVD-2011-2682","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.","status":"published","published":"2011-08-04T01:00:00Z","modified":"2024-08-06T23:08:23Z","updated_at":"2026-11-03T01:39:54.68331Z"}],"ghsa":[{"id":"GHSA-3m7r-w3xm-qwcj","title":"The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not...","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.","status":"published","published":"2022-05-14T02:54:58Z","modified":"2023-02-02T05:06:52Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:52:23.212244Z"}],"nvd":[{"id":"CVE-2011-2701","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.","status":"published","published":"2011-08-04T02:45:32.297Z","modified":"2026-06-16T23:31:49.713Z","cvss":[{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:02:09.182398Z"}]}}