{"api_version":"1","generated_at":"2026-07-23T11:10:53+00:00","cve":"CVE-2013-4314","urls":{"html":"https://cve.report/CVE-2013-4314","api":"https://cve.report/api/cve/CVE-2013-4314.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2013-4314","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-4314"},"summary":{"title":"CVE-2013-4314","description":"The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.","state":"PUBLISHED","assigner":"redhat","published_at":"2013-09-30 21:55:09","updated_at":"2026-04-29 01:13:23"},"problem_types":["CWE-20","n/a"],"metrics":[{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"4.3","severity":"","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","data":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE"}}],"references":[{"url":"http://www.ubuntu.com/usn/USN-1965-1","name":"http://www.ubuntu.com/usn/USN-1965-1","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"title":"USN-1965-1: pyOpenSSL vulnerability | Ubuntu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.debian.org/security/2013/dsa-2763","name":"http://www.debian.org/security/2013/dsa-2763","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Debian -- Security Information -- DSA-2763-1 pyopenssl","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1005325","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1005325","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Bug 1005325 – CVE-2013-4314 pyOpenSSL: hostname check bypassing vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2013/09/06/2","name":"http://www.openwall.com/lists/oss-security/2013/09/06/2","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"oss-security - Re: CVE request: pyOpenSSL hostname check bypassing\n vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html","name":"https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"[pyOpenSSL-Users] pyOpenSSL 0.13.1","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html","name":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"openSUSE-SU-2013:1648-1: moderate: update for python-pyOpenSSL","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2013-4314","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4314","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"10.04","cpe7":"-","cpe8":"lts","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"12.04","cpe7":"-","cpe8":"lts","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"12.10","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"13.04","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.10","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.11","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.11","cpe7":"a1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.11","cpe7":"a2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.12","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.7","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.8","cpe7":"a1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"0.9","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2013","cve_id":"4314","vulnerable":"1","versionEndIncluding":"0.13","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jean-paul_calderone","cpe5":"pyopenssl","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2013-4314","qid":"997513","title":"Python (Pip) Security Update for pyOpenSSL (GHSA-6748-36qp-fx6r)"}]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-06T16:38:01.984Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"name":"DSA-2763","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"],"url":"http://www.debian.org/security/2013/dsa-2763"},{"name":"[pyOpenSSL-Users] 20130904 pyOpenSSL 0.13.1","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1005325"},{"name":"openSUSE-SU-2013:1648","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"],"url":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html"},{"name":"[oss-security] 20130906 Re: CVE request: pyOpenSSL hostname check bypassing  vulnerability","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2013/09/06/2"},{"name":"USN-1965-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"http://www.ubuntu.com/usn/USN-1965-1"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2013-09-04T00:00:00.000Z","descriptions":[{"lang":"en","value":"The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2013-12-05T17:57:00.000Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"name":"DSA-2763","tags":["vendor-advisory","x_refsource_DEBIAN"],"url":"http://www.debian.org/security/2013/dsa-2763"},{"name":"[pyOpenSSL-Users] 20130904 pyOpenSSL 0.13.1","tags":["mailing-list","x_refsource_MLIST"],"url":"https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html"},{"tags":["x_refsource_CONFIRM"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1005325"},{"name":"openSUSE-SU-2013:1648","tags":["vendor-advisory","x_refsource_SUSE"],"url":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html"},{"name":"[oss-security] 20130906 Re: CVE request: pyOpenSSL hostname check bypassing  vulnerability","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2013/09/06/2"},{"name":"USN-1965-1","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"http://www.ubuntu.com/usn/USN-1965-1"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"secalert@redhat.com","ID":"CVE-2013-4314","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 X509Extension in pyOpenSSL before 0.13.1 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"DSA-2763","refsource":"DEBIAN","url":"http://www.debian.org/security/2013/dsa-2763"},{"name":"[pyOpenSSL-Users] 20130904 pyOpenSSL 0.13.1","refsource":"MLIST","url":"https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html"},{"name":"https://bugzilla.redhat.com/show_bug.cgi?id=1005325","refsource":"CONFIRM","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1005325"},{"name":"openSUSE-SU-2013:1648","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html"},{"name":"[oss-security] 20130906 Re: CVE request: pyOpenSSL hostname check bypassing  vulnerability","refsource":"MLIST","url":"http://www.openwall.com/lists/oss-security/2013/09/06/2"},{"name":"USN-1965-1","refsource":"UBUNTU","url":"http://www.ubuntu.com/usn/USN-1965-1"}]}}}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2013-4314","datePublished":"2013-09-30T21:00:00.000Z","dateReserved":"2013-06-12T00:00:00.000Z","dateUpdated":"2024-08-06T16:38:01.984Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2013-09-30 21:55:09","lastModifiedDate":"2026-04-29 01:13:23","problem_types":["CWE-20","n/a"],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:*:*:*:*:*:*:*:*","versionEndIncluding":"0.13","matchCriteriaId":"A32C9AA0-9DC6-48AA-90EA-1685921C27BF"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.7:*:*:*:*:*:*:*","matchCriteriaId":"F6FE1BD7-9887-43AA-B094-1BB7F939136F"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.8:a1:*:*:*:*:*:*","matchCriteriaId":"EB34D71F-2A93-4F00-A760-0EDC0CFC9C9E"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.9:*:*:*:*:*:*:*","matchCriteriaId":"8001E7E4-28E6-45FA-AC7D-5A22955C15C9"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.10:*:*:*:*:*:*:*","matchCriteriaId":"80F7BCFA-7EF4-4FF8-9154-3C7C26519BC6"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.11:*:*:*:*:*:*:*","matchCriteriaId":"5935E83D-59DB-433B-B865-8573C951E769"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.11:a1:*:*:*:*:*:*","matchCriteriaId":"C15AC85A-864A-4233-BA17-E386873A1376"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.11:a2:*:*:*:*:*:*","matchCriteriaId":"563A8C45-8C89-4AD9-B07E-A8BABEDCF92A"},{"vulnerable":true,"criteria":"cpe:2.3:a:jean-paul_calderone:pyopenssl:0.12:*:*:*:*:*:*:*","matchCriteriaId":"4CFB107C-7F87-4BAF-9E2A-E57EF3AFA3A8"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*","matchCriteriaId":"7118F616-25CA-4E34-AA13-4D14BB62419F"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:*","matchCriteriaId":"F5D324C4-97C7-49D3-A809-9EAD4B690C69"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*","matchCriteriaId":"E2076871-2E80-4605-A470-A41C1A8EC7EE"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*","matchCriteriaId":"EFAA48D9-BEB4-4E49-AD50-325C262D46D9"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2013","CveId":"4314","Ordinal":"1","Title":"CVE-2013-4314","CVE":"CVE-2013-4314","Year":"2013"},"notes":[{"CveYear":"2013","CveId":"4314","Ordinal":"1","NoteData":"The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.","Type":"Description","Title":"CVE-2013-4314"},{"CveYear":"2013","CveId":"4314","Ordinal":"2","NoteData":"2013-09-30","Type":"Other","Title":"Published"},{"CveYear":"2013","CveId":"4314","Ordinal":"3","NoteData":"2013-12-05","Type":"Other","Title":"Modified"}]}}}