FKIE_CVE-2006-6164
Vulnerability from fkie_nvd - Published: 2006-11-29 01:28 - Updated: 2026-06-16 22:32
Severity
Summary
The _dl_unsetenv function in loader.c in the ELF ld.so in OpenBSD 3.9 and 4.0 does not properly remove duplicate environment variables, which allows local users to pass dangerous variables such as LD_PRELOAD to loading processes, which might be leveraged to gain privileges.
References
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:openbsd:openbsd:3.9:*:*:*:*:*:*:*",
"matchCriteriaId": "F5BB6C5D-4C43-4BB8-B1CE-A70BBE650CA1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "CC77812C-D84E-493E-9D21-1BA6C2129E70",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The _dl_unsetenv function in loader.c in the ELF ld.so in OpenBSD 3.9 and 4.0 does not properly remove duplicate environment variables, which allows local users to pass dangerous variables such as LD_PRELOAD to loading processes, which might be leveraged to gain privileges."
},
{
"lang": "es",
"value": "La funci\u00f3n _dl_unsetenv en loader.c en el ELF ld.so en OpenBSD 3.9 y 4.0 no borra adecuadamente variables de entorno duplicadas, lo cual permite a usuarios locales pasar variables peligrosas como LD_PRELOAD a procesos de carga, lo cual puede ser utilizado para obtener privilegios."
}
],
"id": "CVE-2006-6164",
"lastModified": "2026-06-16T22:32:35.703",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.2,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 10.0,
"obtainAllPrivilege": true,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2006-11-29T01:28:00.000",
"references": [
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/22993"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch"
],
"url": "http://securitytracker.com/id?1017253"
},
{
"source": "cve@mitre.org",
"url": "http://www.matasano.com/log/592/finger-79tcp-mcdonald-dowd-and-schuh-challenge-part-2/"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch"
],
"url": "http://www.openbsd.org/errata.html#ldso"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch"
],
"url": "http://www.openbsd.org/errata39.html#ldso"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/archive/1/452371/100/0/threaded"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/archive/1/452428/100/0/threaded"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/21188"
},
{
"source": "cve@mitre.org",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30441"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/22993"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://securitytracker.com/id?1017253"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.matasano.com/log/592/finger-79tcp-mcdonald-dowd-and-schuh-challenge-part-2/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://www.openbsd.org/errata.html#ldso"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://www.openbsd.org/errata39.html#ldso"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/452371/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/452428/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/21188"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30441"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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.
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- 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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