fkie_cve-2015-2756
Vulnerability from fkie_nvd
Published
2015-04-01 14:59
Modified
2025-04-12 10:46
Severity ?
Summary
QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 8.0 | |
| xen | xen | 4.3.0 | |
| xen | xen | 4.3.1 | |
| xen | xen | 4.3.2 | |
| xen | xen | 4.4.0 | |
| xen | xen | 4.4.1 | |
| xen | xen | 4.5.0 | |
| fedoraproject | fedora | 20 | |
| fedoraproject | fedora | 21 | |
| canonical | ubuntu_linux | 12.04 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 14.10 | |
| canonical | ubuntu_linux | 15.04 |
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"cveTags": [],
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},
{
"lang": "es",
"value": "QEMU, utilizado en Xen 3.3.x hasta 4.5.x, no restringe correctamente el acceso a los registros de comandos PCI, lo que podr\u00eda permitir a usuarios locales invitados de HVM causar una denegaci\u00f3n de servicio (non-maskable interrupt (NMI) y ca\u00edda de anfitri\u00f3n) mediante la deshabilitaci\u00f3n de (1) la memoria o (2) la decodificaci\u00f3n I/O para un dispositivo PCI Express y posteriormente accediendo al dispositivo, lo que provoca una respuesta Unsupported Request (UR)."
}
],
"id": "CVE-2015-2756",
"lastModified": "2025-04-12T10:46:40.837",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 4.9,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
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"source": "nvd@nist.gov",
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"published": "2015-04-01T14:59:08.757",
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html"
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html"
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html"
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"url": "http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html"
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"url": "http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html"
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{
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"url": "http://support.citrix.com/article/CTX201145"
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"url": "http://www.debian.org/security/2015/dsa-3259"
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}
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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.
- 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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