fkie_cve-2012-3494
Vulnerability from fkie_nvd
Published
2012-11-23 20:55
Modified
2025-04-11 00:51
Severity ?
Summary
The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.
References
Impacted products
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x64:*",
"matchCriteriaId": "2FB5F3E5-D607-4BF5-9BB5-187D2F683F18",
"versionEndIncluding": "6.0.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x86:*",
"matchCriteriaId": "CE28A81B-5201-4D49-888C-0160EF78D5F9",
"versionEndIncluding": "6.0.2",
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"matchCriteriaId": "A5B2BADE-24F0-45A0-BB36-5B0D76D93F5C",
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"matchCriteriaId": "E5CCBFE1-4C48-4F64-8DDC-4A29EC5EBEF7",
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"criteria": "cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x64:*",
"matchCriteriaId": "16FAE1DD-5E59-407A-857C-244814475212",
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"criteria": "cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x86:*",
"matchCriteriaId": "855FD6AA-3288-49C4-BA09-D3685F5928E3",
"vulnerable": true
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{
"criteria": "cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x64:*",
"matchCriteriaId": "93206518-71F7-47A6-B980-06D8B0D3B5CE",
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"criteria": "cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x86:*",
"matchCriteriaId": "D66B1908-FEEF-455E-8C26-65139BF59900",
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}
],
"negate": false,
"operator": "OR"
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}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register."
},
{
"lang": "es",
"value": "La hiperllamada et_debugreg en include/asm-x86/debugreg.h en Xen v4.0, v4.1, y v4.2, y Citrix XenServer v6.0.2 y anteriores, cuando se ejecuta sobre systemas x86-64, permite a usuarios locales del SO invitado generar una denegaci\u00f3n de servicio (ca\u00edda del host) mediante la escritura de ciertos bits reservados para el registro de control DR"
}
],
"id": "CVE-2012-3494",
"lastModified": "2025-04-11T00:51:21.963",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 2.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2012-11-23T20:55:03.057",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html"
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{
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"url": "http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html"
},
{
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"url": "http://osvdb.org/85197"
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{
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"tags": [
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{
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{
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"tags": [
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{
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"url": "http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability"
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"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/78265"
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"url": "https://security.gentoo.org/glsa/201604-03"
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"tags": [
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"url": "http://secunia.com/advisories/50530"
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"tags": [
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"url": "http://support.citrix.com/article/CTX134708"
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability"
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.debian.org/security/2012/dsa-2544"
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2012/09/05/5"
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"url": "http://www.securityfocus.com/bid/55400"
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"url": "http://www.securitytracker.com/id?1027479"
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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 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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