FKIE_CVE-2012-2123
Vulnerability from fkie_nvd - Published: 2012-05-17 11:00 - Updated: 2025-04-11 00:51
Severity ?
Summary
The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "78E044CC-A7B5-4457-9CE9-C1B6A2151C9C",
"versionEndExcluding": "3.0.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1BC85A39-2EFC-4468-9C66-7455CD4EF690",
"versionEndExcluding": "3.2.16",
"versionStartIncluding": "3.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "77EDD976-8BC1-491C-A240-34C0BA4AC31D",
"versionEndExcluding": "3.3.3",
"versionStartIncluding": "3.3",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR."
},
{
"lang": "es",
"value": "La funci\u00f3n cap_bprm_set_creds en security/commoncap.c en el n\u00facleo de Linux antes de v3.3.3 no controla correctamente el uso de las capacidades del sistema de archivos (FCAPS aka) para la implementaci\u00f3n de un archivo ejecutable con privilegios, lo cual permite a usuarios locales eludir las restricciones personales a trav\u00e9s de una aplicaci\u00f3n manipulada, como se demuestra por un ataque que utiliza un proceso padre para desactivar ASLR."
}
],
"id": "CVE-2012-2123",
"lastModified": "2025-04-11T00:51:21.963",
"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": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2012-05-17T11:00:38.367",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Broken Link"
],
"url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d52fc5dde171f030170a6cb78034d166b13c9445"
},
{
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{
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{
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"url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.3"
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"url": "http://www.securitytracker.com/id?1027072"
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{
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"tags": [
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},
{
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"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/75043"
},
{
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"url": "https://github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445"
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d52fc5dde171f030170a6cb78034d166b13c9445"
},
{
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"tags": [
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"url": "http://rhn.redhat.com/errata/RHSA-2012-0670.html"
},
{
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"tags": [
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"url": "http://rhn.redhat.com/errata/RHSA-2012-0743.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://www.debian.org/security/2012/dsa-2469"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2012/04/20/6"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
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],
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},
{
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{
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"VDB Entry"
],
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/75043"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445"
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],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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