CVE-2011-2701 (GCVE-0-2011-2701)
Vulnerability from cvelistv5
Published
2011-08-04 01:00
Modified
2024-08-06 23:08
Severity ?
EPSS score ?
Summary
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
{ containers: { adp: [ { providerMetadata: { dateUpdated: "2024-08-06T23:08:23.745Z", orgId: "af854a3a-2127-422b-91ae-364da2661108", shortName: "CVE", }, references: [ { name: "48880", tags: [ "vdb-entry", "x_refsource_BID", "x_transferred", ], url: "http://www.securityfocus.com/bid/48880", }, { name: "freeradius-certificate-security-bypass(68782)", tags: [ "vdb-entry", "x_refsource_XF", "x_transferred", ], url: "https://exchange.xforce.ibmcloud.com/vulnerabilities/68782", }, { name: "[oss-security] 20110715 CVE request: vulnerability in FreeRADIUS (OCSP)", tags: [ "mailing-list", "x_refsource_MLIST", "x_transferred", ], url: "http://www.openwall.com/lists/oss-security/2011/07/15/6", }, { name: "[oss-security] 20110718 Re: CVE request: vulnerability in FreeRADIUS (OCSP)", tags: [ "mailing-list", "x_refsource_MLIST", "x_transferred", ], url: "http://www.openwall.com/lists/oss-security/2011/07/18/2", }, { name: "45425", tags: [ "third-party-advisory", "x_refsource_SECUNIA", "x_transferred", ], url: "http://secunia.com/advisories/45425", }, { name: "20110725 [DSB-2011-01] Security Advisory FreeRADIUS 2.1.11", tags: [ "mailing-list", "x_refsource_BUGTRAQ", "x_transferred", ], url: "http://www.securityfocus.com/archive/1/518974/100/0/threaded", }, { tags: [ "x_refsource_MISC", "x_transferred", ], url: "https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html", }, { name: "8325", tags: [ "third-party-advisory", "x_refsource_SREASON", "x_transferred", ], url: "http://securityreason.com/securityalert/8325", }, { name: "1025833", tags: [ "vdb-entry", "x_refsource_SECTRACK", "x_transferred", ], url: "http://securitytracker.com/id?1025833", }, { tags: [ "x_refsource_MISC", "x_transferred", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=724815", }, { name: "[oss-security] 20110720 Re: CVE request: vulnerability in FreeRADIUS (OCSP)", tags: [ "mailing-list", "x_refsource_MLIST", "x_transferred", ], url: "http://www.openwall.com/lists/oss-security/2011/07/20/9", }, ], title: "CVE Program Container", }, ], cna: { affected: [ { product: "n/a", vendor: "n/a", versions: [ { status: "affected", version: "n/a", }, ], }, ], datePublic: "2011-07-15T00:00:00", descriptions: [ { lang: "en", value: "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.", }, ], problemTypes: [ { descriptions: [ { description: "n/a", lang: "en", type: "text", }, ], }, ], providerMetadata: { dateUpdated: "2018-10-09T18:57:01", orgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", shortName: "redhat", }, references: [ { name: "48880", tags: [ "vdb-entry", "x_refsource_BID", ], url: "http://www.securityfocus.com/bid/48880", }, { name: "freeradius-certificate-security-bypass(68782)", tags: [ "vdb-entry", "x_refsource_XF", ], url: "https://exchange.xforce.ibmcloud.com/vulnerabilities/68782", }, { name: "[oss-security] 20110715 CVE request: vulnerability in FreeRADIUS (OCSP)", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "http://www.openwall.com/lists/oss-security/2011/07/15/6", }, { name: "[oss-security] 20110718 Re: CVE request: vulnerability in FreeRADIUS (OCSP)", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "http://www.openwall.com/lists/oss-security/2011/07/18/2", }, { name: "45425", tags: [ "third-party-advisory", "x_refsource_SECUNIA", ], url: "http://secunia.com/advisories/45425", }, { name: "20110725 [DSB-2011-01] Security Advisory FreeRADIUS 2.1.11", tags: [ "mailing-list", "x_refsource_BUGTRAQ", ], url: "http://www.securityfocus.com/archive/1/518974/100/0/threaded", }, { tags: [ "x_refsource_MISC", ], url: "https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html", }, { name: "8325", tags: [ "third-party-advisory", "x_refsource_SREASON", ], url: "http://securityreason.com/securityalert/8325", }, { name: "1025833", tags: [ "vdb-entry", "x_refsource_SECTRACK", ], url: "http://securitytracker.com/id?1025833", }, { tags: [ "x_refsource_MISC", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=724815", }, { name: "[oss-security] 20110720 Re: CVE request: vulnerability in FreeRADIUS (OCSP)", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "http://www.openwall.com/lists/oss-security/2011/07/20/9", }, ], x_legacyV4Record: { CVE_data_meta: { ASSIGNER: "secalert@redhat.com", ID: "CVE-2011-2701", STATE: "PUBLIC", }, affects: { vendor: { vendor_data: [ { product: { product_data: [ { product_name: "n/a", version: { version_data: [ { version_value: "n/a", }, ], }, }, ], }, vendor_name: "n/a", }, ], }, }, data_format: "MITRE", data_type: "CVE", data_version: "4.0", description: { description_data: [ { lang: "eng", value: "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.", }, ], }, problemtype: { problemtype_data: [ { description: [ { lang: "eng", value: "n/a", }, ], }, ], }, references: { reference_data: [ { name: "48880", refsource: "BID", url: "http://www.securityfocus.com/bid/48880", }, { name: "freeradius-certificate-security-bypass(68782)", refsource: "XF", url: "https://exchange.xforce.ibmcloud.com/vulnerabilities/68782", }, { name: "[oss-security] 20110715 CVE request: vulnerability in FreeRADIUS (OCSP)", refsource: "MLIST", url: "http://www.openwall.com/lists/oss-security/2011/07/15/6", }, { name: "[oss-security] 20110718 Re: CVE request: vulnerability in FreeRADIUS (OCSP)", refsource: "MLIST", url: "http://www.openwall.com/lists/oss-security/2011/07/18/2", }, { name: "45425", refsource: "SECUNIA", url: "http://secunia.com/advisories/45425", }, { name: "20110725 [DSB-2011-01] Security Advisory FreeRADIUS 2.1.11", refsource: "BUGTRAQ", url: "http://www.securityfocus.com/archive/1/518974/100/0/threaded", }, { name: "https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html", refsource: "MISC", url: "https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html", }, { name: "8325", refsource: "SREASON", url: "http://securityreason.com/securityalert/8325", }, { name: "1025833", refsource: "SECTRACK", url: "http://securitytracker.com/id?1025833", }, { name: "https://bugzilla.redhat.com/show_bug.cgi?id=724815", refsource: "MISC", url: "https://bugzilla.redhat.com/show_bug.cgi?id=724815", }, { name: "[oss-security] 20110720 Re: CVE request: vulnerability in FreeRADIUS (OCSP)", refsource: "MLIST", url: "http://www.openwall.com/lists/oss-security/2011/07/20/9", }, ], }, }, }, }, cveMetadata: { assignerOrgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", assignerShortName: "redhat", cveId: "CVE-2011-2701", datePublished: "2011-08-04T01:00:00", dateReserved: "2011-07-11T00:00:00", dateUpdated: "2024-08-06T23:08:23.745Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { fkie_nvd: { configurations: "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:freeradius:freeradius:2.1.11:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"908DA549-0EE5-4B85-961F-1C67210F6AED\"}]}]}]", descriptions: "[{\"lang\": \"en\", \"value\": \"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.\"}, {\"lang\": \"es\", \"value\": \"La funci\\u00f3n ocsp_check de rlm_eap_tls.c de FreeRADIUS 2.1.11, si OCSP est\\u00e1 habilitado, no analiza correctamente la sintaxis (\\\"parse\\\") de las respuestas de los agentes transmisores OCSP, lo que permite a atacantes remotos evitar la autenticaci\\u00f3n usando el protocolo EAP-TLS con un certificado cliente X.509 revocado.\"}]", id: "CVE-2011-2701", lastModified: "2024-11-21T01:28:47.547", metrics: "{\"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:P/I:P/A:N\", \"baseScore\": 5.8, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 4.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}", published: "2011-08-04T02:45:32.297", references: "[{\"url\": \"http://secunia.com/advisories/45425\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://securityreason.com/securityalert/8325\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"http://securitytracker.com/id?1025833\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2011/07/15/6\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2011/07/18/2\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2011/07/20/9\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"http://www.securityfocus.com/archive/1/518974/100/0/threaded\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"http://www.securityfocus.com/bid/48880\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=724815\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Patch\"]}, {\"url\": \"https://exchange.xforce.ibmcloud.com/vulnerabilities/68782\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"http://secunia.com/advisories/45425\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://securityreason.com/securityalert/8325\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://securitytracker.com/id?1025833\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2011/07/15/6\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2011/07/18/2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2011/07/20/9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.securityfocus.com/archive/1/518974/100/0/threaded\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.securityfocus.com/bid/48880\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=724815\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://exchange.xforce.ibmcloud.com/vulnerabilities/68782\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]", sourceIdentifier: "secalert@redhat.com", vulnStatus: "Modified", weaknesses: "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-287\"}]}]", }, nvd: "{\"cve\":{\"id\":\"CVE-2011-2701\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2011-08-04T02:45:32.297\",\"lastModified\":\"2025-04-11T00:51:21.963\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"La función ocsp_check de rlm_eap_tls.c de FreeRADIUS 2.1.11, si OCSP está habilitado, no analiza correctamente la sintaxis (\\\"parse\\\") de las respuestas de los agentes transmisores OCSP, lo que permite a atacantes remotos evitar la autenticación usando el protocolo EAP-TLS con un certificado cliente X.509 revocado.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:N\",\"baseScore\":5.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:freeradius:freeradius:2.1.11:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"908DA549-0EE5-4B85-961F-1C67210F6AED\"}]}]}],\"references\":[{\"url\":\"http://secunia.com/advisories/45425\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://securityreason.com/securityalert/8325\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://securitytracker.com/id?1025833\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/07/15/6\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/07/18/2\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/07/20/9\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.securityfocus.com/archive/1/518974/100/0/threaded\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.securityfocus.com/bid/48880\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=724815\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://exchange.xforce.ibmcloud.com/vulnerabilities/68782\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://secunia.com/advisories/45425\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://securityreason.com/securityalert/8325\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://securitytracker.com/id?1025833\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/07/15/6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/07/18/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/07/20/9\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securityfocus.com/archive/1/518974/100/0/threaded\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securityfocus.com/bid/48880\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=724815\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://exchange.xforce.ibmcloud.com/vulnerabilities/68782\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}", }, }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.