FKIE_CVE-2012-3494
Vulnerability from fkie_nvd - Published: 2012-11-23 20:55 - Updated: 2026-06-16 23:43
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
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
{
"nodes": [
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"versionEndIncluding": "6.0.2",
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"versionEndIncluding": "6.0.2",
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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": "2026-06-16T23:43:20.170",
"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"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html"
},
{
"source": "secalert@redhat.com",
"url": "http://osvdb.org/85197"
},
{
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"tags": [
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"tags": [
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"url": "http://secunia.com/advisories/51413"
},
{
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"url": "http://secunia.com/advisories/55082"
},
{
"source": "secalert@redhat.com",
"url": "http://security.gentoo.org/glsa/glsa-201309-24.xml"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://support.citrix.com/article/CTX134708"
},
{
"source": "secalert@redhat.com",
"url": "http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability"
},
{
"source": "secalert@redhat.com",
"url": "http://www.debian.org/security/2012/dsa-2544"
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"source": "secalert@redhat.com",
"url": "http://www.openwall.com/lists/oss-security/2012/09/05/5"
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{
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"url": "http://www.securityfocus.com/bid/55400"
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=851139"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/78265"
},
{
"source": "secalert@redhat.com",
"url": "https://security.gentoo.org/glsa/201604-03"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html"
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{
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{
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"url": "http://security.gentoo.org/glsa/glsa-201309-24.xml"
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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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",
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{
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
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},
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
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}
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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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