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CERTFR-2021-AVI-553
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian et Debian LTS. Elles permettent à un attaquant de provoquer un déni de service, 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": "Debian 9 stretch versions ant\u00e9rieures \u00e0 4.9.272-2",
"product": {
"name": "N/A",
"vendor": {
"name": "Debian",
"scada": false
}
}
},
{
"description": "Debian 9 stretch versions ant\u00e9rieures \u00e0 4.19.194-3~deb9u1",
"product": {
"name": "N/A",
"vendor": {
"name": "Debian",
"scada": false
}
}
},
{
"description": "Debian buster versions ant\u00e9rieures \u00e0 4.19.194-3",
"product": {
"name": "N/A",
"vendor": {
"name": "Debian",
"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-2021-34693",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-34693"
},
{
"name": "CVE-2020-36311",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-36311"
},
{
"name": "CVE-2021-3609",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3609"
},
{
"name": "CVE-2021-33909",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-33909"
},
{
"name": "CVE-2021-21781",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-21781"
}
],
"initial_release_date": "2021-07-21T00:00:00",
"last_revision_date": "2021-07-21T00:00:00",
"links": [],
"reference": "CERTFR-2021-AVI-553",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-07-21T00:00:00.000000"
}
],
"risks": [
{
"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 d\u00e9couvertes dans le noyau Linux de\nDebian et Debian LTS. Elles permettent \u00e0 un attaquant de provoquer un\nd\u00e9ni de service, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et une\n\u00e9l\u00e9vation de privil\u00e8ges.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux de Debian",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Debian dla-2713-2 du 20 juillet 2021",
"url": "https://www.debian.org/lts/security/2021/dla-2713-2"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Debian dla-2714 du 20 juillet 2021",
"url": "https://www.debian.org/lts/security/2021/dla-2714"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Debian dla-2713 du 20 juillet 2021",
"url": "https://www.debian.org/lts/security/2021/dla-2713"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Debian dsa-4941 du 20 juillet 2021",
"url": "https://www.debian.org/security/2021/dsa-4941"
}
]
}
CVE-2020-36311 (GCVE-0-2020-36311)
Vulnerability from cvelistv5
Published
2021-04-06 23:28
Modified
2024-08-04 17:23
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
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CVE-2021-3609 (GCVE-0-2021-3609)
Vulnerability from cvelistv5
Published
2022-03-03 18:24
Modified
2024-08-03 17:01
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-362 - - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary
.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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CVE-2021-21781 (GCVE-0-2021-21781)
Vulnerability from cvelistv5
Published
2021-08-18 14:37
Modified
2024-08-03 18:23
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-908 - Use of Uninitialized Resource
Summary
An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: Linux Kernel v5.4.54, Linux Kernel v5.4.66 |
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CVE-2021-34693 (GCVE-0-2021-34693)
Vulnerability from cvelistv5
Published
2021-06-14 00:00
Modified
2024-08-04 00:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.
References
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CVE-2021-33909 (GCVE-0-2021-33909)
Vulnerability from cvelistv5
Published
2021-07-20 18:01
Modified
2024-08-04 00:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
References
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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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