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CERTFR-2015-AVI-551
Vulnerability from certfr_avis
De multiples vulnérabilités ont été corrigées dans Xen. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à la confidentialité des données.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Xen versions 4.6 et antérieures
Impacted products
| Vendor | Product | Description |
|---|
References
| Title | Publication Time | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [],
"affected_systems_content": "\u003cP\u003eXen versions 4.6 et ant\u00e9rieures\u003c/P\u003e",
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2015-8550",
"url": "https://www.cve.org/CVERecord?id=CVE-2015-8550"
},
{
"name": "CVE-2015-8551",
"url": "https://www.cve.org/CVERecord?id=CVE-2015-8551"
},
{
"name": "CVE-2015-8552",
"url": "https://www.cve.org/CVERecord?id=CVE-2015-8552"
},
{
"name": "CVE-2015-8554",
"url": "https://www.cve.org/CVERecord?id=CVE-2015-8554"
},
{
"name": "CVE-2015-8555",
"url": "https://www.cve.org/CVERecord?id=CVE-2015-8555"
}
],
"initial_release_date": "2015-12-18T00:00:00",
"last_revision_date": "2015-12-18T00:00:00",
"links": [],
"reference": "CERTFR-2015-AVI-551",
"revisions": [
{
"description": "version initiale.",
"revision_date": "2015-12-18T00:00:00.000000"
}
],
"risks": [
{
"description": "Ex\u00e9cution de code arbitraire"
},
{
"description": "D\u00e9ni de service"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es dans \u003cspan\nclass=\"textit\"\u003eXen\u003c/span\u003e. Certaines d\u0027entre elles permettent \u00e0 un\nattaquant de provoquer une ex\u00e9cution de code arbitraire, un d\u00e9ni de\nservice et une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Xen",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-164 du 17 d\u00e9cembre 2015",
"url": "http://xenbits.xen.org/xsa/advisory-164.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-165 du 17 d\u00e9cembre 2015",
"url": "http://xenbits.xen.org/xsa/advisory-165.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-166 du 17 d\u00e9cembre 2015",
"url": "http://xenbits.xen.org/xsa/advisory-166.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-157 du 17 d\u00e9cembre 2015",
"url": "http://xenbits.xen.org/xsa/advisory-157.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-155 du 17 d\u00e9cembre 2015",
"url": "http://xenbits.xen.org/xsa/advisory-155.html"
}
]
}
CVE-2015-8550 (GCVE-0-2015-8550)
Vulnerability from cvelistv5
Published
2016-04-14 14:00
Modified
2024-08-06 08:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
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CVE-2015-8552 (GCVE-0-2015-8552)
Vulnerability from cvelistv5
Published
2016-04-13 15:00
Modified
2024-08-06 08:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to generate a continuous stream of WARN messages and cause a denial of service (disk consumption) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and XEN_PCI_OP_enable_msi operations, aka "Linux pciback missing sanity checks."
References
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CVE-2015-8555 (GCVE-0-2015-8555)
Vulnerability from cvelistv5
Published
2016-04-13 15:00
Modified
2024-08-06 08:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.
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CVE-2015-8554 (GCVE-0-2015-8554)
Vulnerability from cvelistv5
Published
2016-04-14 14:00
Modified
2024-08-06 08:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional (aka qemu-dm) device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries, related to a "write path."
References
| URL | Tags | |||||||||||||||||||
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CVE-2015-8551 (GCVE-0-2015-8551)
Vulnerability from cvelistv5
Published
2016-04-13 15:00
Modified
2024-08-06 08:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service (NULL pointer dereference and host OS crash) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and a crafted sequence of XEN_PCI_OP_* operations, aka "Linux pciback missing sanity checks."
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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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