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CERTFR-2022-AVI-610
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans Xen. Elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une élévation de privilèges.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Xen toutes versions sans le dernier correctif de s\u00e9curit\u00e9",
"product": {
"name": "Xen",
"vendor": {
"name": "XEN",
"scada": false
}
}
}
],
"affected_systems_content": null,
"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-2022-33741",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-33741"
},
{
"name": "CVE-2022-33742",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-33742"
},
{
"name": "CVE-2022-33740",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-33740"
},
{
"name": "CVE-2022-33744",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-33744"
},
{
"name": "CVE-2022-33743",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-33743"
},
{
"name": "CVE-2022-26365",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-26365"
}
],
"initial_release_date": "2022-07-06T00:00:00",
"last_revision_date": "2022-07-06T00:00:00",
"links": [],
"reference": "CERTFR-2022-AVI-610",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2022-07-06T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Xen. Elles\npermettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance,\nune atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et une \u00e9l\u00e9vation de\nprivil\u00e8ges.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Xen",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-403 du 05 juillet 2022",
"url": "https://xenbits.xen.org/xsa/advisory-403.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-406 du 05 juillet 2022",
"url": "https://xenbits.xen.org/xsa/advisory-406.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-405 du 05 juillet 2022",
"url": "https://xenbits.xen.org/xsa/advisory-405.html"
}
]
}
CVE-2022-26365 (GCVE-0-2022-26365)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
Modified
2024-08-03 05:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
{
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},
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},
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},
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},
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CVE-2022-33743 (GCVE-0-2022-33743)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
Modified
2024-08-03 08:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data Path), a code label was moved in a way allowing for SKBs having references (pointers) retained for further processing to nevertheless be freed.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
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CVE-2022-33740 (GCVE-0-2022-33740)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
Modified
2024-08-03 08:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
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CVE-2022-33742 (GCVE-0-2022-33742)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
Modified
2024-08-03 08:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2022-33744 (GCVE-0-2022-33744)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
Modified
2024-08-03 08:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2022-33741 (GCVE-0-2022-33741)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
Modified
2024-08-03 08:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Loading…
Loading…
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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