CVE-2009-4034 (GCVE-0-2009-4034)
Vulnerability from cvelistv5 – Published: 2009-12-15 18:00 – Updated: 2024-08-07 06:45
VLAI
EPSS
VEX
Summary
PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based PostgreSQL servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended client-hostname restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
19 references
Date Public
2009-12-14 00:00
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"descriptions": [
{
"lang": "en",
"value": "PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly handle a \u0027\\0\u0027 character in a domain name in the subject\u0027s Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based PostgreSQL servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended client-hostname restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408."
},
{
"lang": "es",
"value": "PostgreSQL v7.4.x anteriores a v7.4.27, v8.0.x anteriores a v8.0.23, v8.1.x anteriores a v8.1.19, v8.2.x anteriores a v8.2.15, v8.3.x anteriores a v8.3.9, y v8.4.x anteriores a v8.4.2 no maneja adecuadamente un caracter \u0027/0\u0027 en el nombre de dominio en el campo \"subject\" del Nombre Com\u00fan (CN) de un certificado X.509, lo que permite (1) a atacantes man-in-the-middle falsificar a conveniencia los servidores PostgreSQL basados en SSL a trav\u00e9s de un certificado de servidor manipulado obtenido a trav\u00e9s de una autoridad certificadora legitima, y (2)permite a atacantes remotos evitar las restricciones cliente-hostname a trav\u00e9s de un certificado manipulado obtenido a trav\u00e9s de una autoridad certificadora legitima, un asunto relacionado con CVE-2009-2408."
}
],
"id": "CVE-2009-4034",
"lastModified": "2024-11-21T01:08:47.287",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.8,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2009-12-15T18:30:01.420",
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],
"sourceIdentifier": "secalert@redhat.com",
"vendorComments": [
{
"comment": "This issue is only security-relevant in PostgreSQL versions 8.4 and later as previous versions did not compare the connection host name with the certificate CommonName at all. Client certificate authentication was introduced in version 8.4. Red Hat Enterprise Linux 5 and earlier provided PostgreSQL versions 8.1.x and earlier, and are thus not affected by this issue.\n",
"lastModified": "2010-01-07T00:00:00",
"organization": "Red Hat"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-310"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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"negate": false,
"operator": "OR"
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}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly handle a \u0027\\0\u0027 character in a domain name in the subject\u0027s Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based PostgreSQL servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended client-hostname restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408."
},
{
"lang": "es",
"value": "PostgreSQL v7.4.x anteriores a v7.4.27, v8.0.x anteriores a v8.0.23, v8.1.x anteriores a v8.1.19, v8.2.x anteriores a v8.2.15, v8.3.x anteriores a v8.3.9, y v8.4.x anteriores a v8.4.2 no maneja adecuadamente un caracter \u0027/0\u0027 en el nombre de dominio en el campo \"subject\" del Nombre Com\u00fan (CN) de un certificado X.509, lo que permite (1) a atacantes man-in-the-middle falsificar a conveniencia los servidores PostgreSQL basados en SSL a trav\u00e9s de un certificado de servidor manipulado obtenido a trav\u00e9s de una autoridad certificadora legitima, y (2)permite a atacantes remotos evitar las restricciones cliente-hostname a trav\u00e9s de un certificado manipulado obtenido a trav\u00e9s de una autoridad certificadora legitima, un asunto relacionado con CVE-2009-2408."
}
],
"id": "CVE-2009-4034",
"lastModified": "2026-04-23T00:35:47.467",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.8,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2009-12-15T18:30:01.420",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html"
},
{
"source": "secalert@redhat.com",
"url": "http://marc.info/?l=bugtraq\u0026m=134124585221119\u0026w=2"
},
{
"source": "secalert@redhat.com",
"url": "http://osvdb.org/61038"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/37663"
},
{
"source": "secalert@redhat.com",
"url": "http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0012"
},
{
"source": "secalert@redhat.com",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:333"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-7-4-27.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-0-23.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-1-19.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-2-15.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-3-9.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-4-2.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://www.postgresql.org/support/security.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/archive/1/509917/100/0/threaded"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/37334"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securitytracker.com/id?1023325"
},
{
"source": "secalert@redhat.com",
"url": "http://www.vupen.com/english/advisories/2009/3519"
},
{
"source": "secalert@redhat.com",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01035.html"
},
{
"source": "secalert@redhat.com",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01056.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://marc.info/?l=bugtraq\u0026m=134124585221119\u0026w=2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://osvdb.org/61038"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/37663"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0012"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:333"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-7-4-27.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-0-23.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-1-19.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-2-15.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-3-9.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.postgresql.org/docs/current/static/release-8-4-2.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.postgresql.org/support/security.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/509917/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/37334"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id?1023325"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.vupen.com/english/advisories/2009/3519"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01035.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01056.html"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vendorComments": [
{
"comment": "This issue is only security-relevant in PostgreSQL versions 8.4 and later as previous versions did not compare the connection host name with the certificate CommonName at all. Client certificate authentication was introduced in version 8.4. Red Hat Enterprise Linux 5 and earlier provided PostgreSQL versions 8.1.x and earlier, and are thus not affected by this issue.\n",
"lastModified": "2010-01-07T00:00:00",
"organization": "Red Hat"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-310"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-11-21T13:09:21+00:00",
"cve": "CVE-2009-4034",
"id": "CVE-2009-4034",
"initial_release_date": "2009-12-09T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "postgresql: incorrect verification of SSL certificates with NUL in name",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-4034.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-09-02T13:05:58Z",
"cve": "CVE-2009-4034",
"id": "CVE-2009-4034",
"initial_release_date": "2023-02-15T06:01:39Z",
"product_status:known_affected": "5",
"product_status:recommended": "240",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2009-4034",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2009-4034.json",
"version": "14"
}
}
}
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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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