fkie_cve-2009-4146
Vulnerability from fkie_nvd
Published
2009-12-02 18:30
Modified
2025-04-09 00:30
Severity ?
Summary
The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1, 7.2, and 8.0 does not clear the LD_PRELOAD environment variable, which allows local users to gain privileges by executing a setuid or setguid program with a modified LD_PRELOAD variable containing an untrusted search path that points to a Trojan horse library, a different vector than CVE-2009-4147.
References
Impacted products
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:freebsd:freebsd:7.1:*:*:*:*:*:*:*",
"matchCriteriaId": "803EFA9F-B7CB-4511-B1C1-381170CA9A23",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:7.2:*:*:*:*:*:*:*",
"matchCriteriaId": "F948527C-A01E-4315-80B6-47FACE18A34F",
"vulnerable": true
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{
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"negate": false,
"operator": "OR"
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1, 7.2, and 8.0 does not clear the LD_PRELOAD environment variable, which allows local users to gain privileges by executing a setuid or setguid program with a modified LD_PRELOAD variable containing an untrusted search path that points to a Trojan horse library, a different vector than CVE-2009-4147."
},
{
"lang": "es",
"value": "La funci\u00f3n _rtld en el Run-Time Link-Editor (rtld) de libexec/rtld-elf/rtld.c de FreeBSD v7.1, v7.2 y v8.0, no limpia la variable de entorno LD_PRELOAD, esto permite a usuarios locales aumentar sus privilegios al ejecutar el programa setuid o setguid con la variable LD_PRELOAD modificada para que contenga una ruta de b\u00fasqueda no confiable que apunte a una biblioteca de un Troyano. Se trata de una vulnerabilidad diferente de CVE-2009-4147."
}
],
"id": "CVE-2009-4146",
"lastModified": "2025-04-09T00:30:58.490",
"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": "2009-12-02T18:30:00.297",
"references": [
{
"source": "cve@mitre.org",
"url": "http://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit"
],
"url": "http://people.freebsd.org/~cperciva/rtld.patch"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/37517"
},
{
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"url": "http://www.securityfocus.com/archive/1/508142/100/0/threaded"
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"url": "http://www.securityfocus.com/archive/1/508168/100/0/threaded"
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"tags": [
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"url": "http://www.securityfocus.com/bid/37154"
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"url": "http://www.securitytracker.com/id?1023250"
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{
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"tags": [
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"url": "http://www.securitytracker.com/id?1023250"
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],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Deferred",
"weaknesses": [
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"description": [
{
"lang": "en",
"value": "CWE-264"
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],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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.
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