CVE-2013-7440 (GCVE-0-2013-7440)
Vulnerability from cvelistv5 – Published: 2016-06-07 18:00 – Updated: 2024-08-06 18:09
VLAI
EPSS
VEX
Summary
The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames, which might allow man-in-the-middle attackers to spoof servers via a crafted certificate.
Severity
5.9 (Medium)
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| http://seclists.org/oss-sec/2015/q2/483 | mailing-listx_refsource_MLIST |
| https://access.redhat.com/errata/RHSA-2016:1166 | vendor-advisoryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=1224999 | x_refsource_CONFIRM |
| https://hg.python.org/cpython/rev/10d0edadbcdd | x_refsource_CONFIRM |
| https://bugs.python.org/issue17997 | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/74707 | vdb-entryx_refsource_BID |
| http://seclists.org/oss-sec/2015/q2/523 | mailing-listx_refsource_MLIST |
Date Public
2013-08-12 00:00
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"criteria": "cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:*",
"matchCriteriaId": "6595C4F3-5683-4889-AD30-83840F6A58D1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:*",
"matchCriteriaId": "027FD902-9B08-4EDF-9F83-314FBF0583ED",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:*",
"matchCriteriaId": "89FB9D30-8559-4F57-9D20-DC603765B346",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:*",
"matchCriteriaId": "957FCB4A-32D0-4449-8995-80144CC713B4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.2.6:*:*:*:*:*:*:*",
"matchCriteriaId": "C17A0E8D-7611-42F7-896E-F2B3BC25643D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.2.2150:*:*:*:*:*:*:*",
"matchCriteriaId": "F236E583-D23D-4769-8A25-EBFC930E4798",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.3:*:*:*:*:*:*:*",
"matchCriteriaId": "6DF7665B-3A10-46D1-B486-AFC9ED6C0B8A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.3:beta2:*:*:*:*:*:*",
"matchCriteriaId": "0E2DAB9D-5D7D-40ED-8110-E3FDF7AE0729",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:*",
"matchCriteriaId": "875ABC97-2783-41DA-AB9F-9E6F0870B74C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:*",
"matchCriteriaId": "5262D28D-204C-41E8-BC4D-27372E366295",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.3.1:rc1:*:*:*:*:*:*",
"matchCriteriaId": "0D553F40-92C2-4537-AF74-5F9307E20AE4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:*",
"matchCriteriaId": "121225D0-C5DA-4F26-93B8-3D56BC1D38B1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames, which might allow man-in-the-middle attackers to spoof servers via a crafted certificate."
},
{
"lang": "es",
"value": "La funci\u00f3n ssl.match_hostname en CPython (tambi\u00e9n concida como Python) en versiones anteriores a 2.7.9 y 3.x en versiones anteriores a 3.3.3 no maneja correctamente comodines en los nombres de host, lo que podr\u00eda permitir a atacantes man-in-the-middle suplantar servidores a trav\u00e9s de un certificado manipulado."
}
],
"id": "CVE-2013-7440",
"lastModified": "2026-05-06T22:30:45.220",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.0"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2016-06-07T18:59:00.120",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://seclists.org/oss-sec/2015/q2/483"
},
{
"source": "secalert@redhat.com",
"url": "http://seclists.org/oss-sec/2015/q2/523"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/74707"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2016:1166"
},
{
"source": "secalert@redhat.com",
"url": "https://bugs.python.org/issue17997"
},
{
"source": "secalert@redhat.com",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1224999"
},
{
"source": "secalert@redhat.com",
"url": "https://hg.python.org/cpython/rev/10d0edadbcdd"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://seclists.org/oss-sec/2015/q2/483"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://seclists.org/oss-sec/2015/q2/523"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/74707"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHSA-2016:1166"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugs.python.org/issue17997"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1224999"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://hg.python.org/cpython/rev/10d0edadbcdd"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-19"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-28T06:29:10+00:00",
"cve": "CVE-2013-7440",
"id": "CVE-2013-7440",
"initial_release_date": "2013-08-12T00:00:00+00:00",
"product_status:fixed": "280",
"product_status:known_affected": "30",
"product_status:known_not_affected": "1872",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "python: wildcard matching rules do not follow RFC 6125",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2013/cve-2013-7440.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-05T01:28:42Z",
"cve": "CVE-2013-7440",
"id": "CVE-2013-7440",
"initial_release_date": "2023-02-15T05:33:11Z",
"product_status:recommended": "25",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2013-7440",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2013-7440.json",
"version": "8"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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