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CERTFR-2022-AVI-008
Vulnerability from certfr_avis - Published: - Updated:
De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.
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": "Ubuntu 16.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 18.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 21.10",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 21.04",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 20.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 14.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"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-2021-20317",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-20317"
},
{
"name": "CVE-2021-41864",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-41864"
},
{
"name": "CVE-2021-3760",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3760"
},
{
"name": "CVE-2021-4001",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-4001"
},
{
"name": "CVE-2021-4002",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-4002"
},
{
"name": "CVE-2021-20321",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-20321"
},
{
"name": "CVE-2021-43267",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-43267"
},
{
"name": "CVE-2021-42739",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-42739"
},
{
"name": "CVE-2021-43056",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-43056"
},
{
"name": "CVE-2021-43389",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-43389"
}
],
"links": [],
"reference": "CERTFR-2022-AVI-008",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2022-01-07T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux\nd\u0027Ubuntu. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer\nune ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de service \u00e0\ndistance et un contournement de la politique de s\u00e9curit\u00e9.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux d\u0027Ubuntu",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5209-1 du 06 janvier 2022",
"url": "https://ubuntu.com/security/notices/USN-5209-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu LSN-0083-1 du 06 janvier 2022",
"url": "https://ubuntu.com/security/notices/LSN-0083-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5207-1 du 05 janvier 2022",
"url": "https://ubuntu.com/security/notices/USN-5207-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5210-1 du 06 janvier 2022",
"url": "https://ubuntu.com/security/notices/USN-5210-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5208-1 du 06 janvier 2022",
"url": "https://ubuntu.com/security/notices/USN-5208-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5211-1 du 06 janvier 2022",
"url": "https://ubuntu.com/security/notices/USN-5211-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5206-1 du 05 janvier 2022",
"url": "https://ubuntu.com/security/notices/USN-5206-1"
}
]
}
CVE-2021-43267 (GCVE-0-2021-43267)
Vulnerability from cvelistv5 – Published: 2021-11-02 22:13 – Updated: 2024-08-04 03:55
VLAI?
EPSS
Summary
An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2021-4002 (GCVE-0-2021-4002)
Vulnerability from cvelistv5 – Published: 2022-03-03 21:42 – Updated: 2024-08-03 17:16
VLAI?
EPSS
Summary
A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
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CVE-2021-3760 (GCVE-0-2021-3760)
Vulnerability from cvelistv5 – Published: 2022-02-16 18:35 – Updated: 2024-08-03 17:09
VLAI?
EPSS
Summary
A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat to confidentiality, integrity, and system availability.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
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CVE-2021-20321 (GCVE-0-2021-20321)
Vulnerability from cvelistv5 – Published: 2022-02-18 17:50 – Updated: 2024-08-03 17:37
VLAI?
EPSS
Summary
A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
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CVE-2021-43056 (GCVE-0-2021-43056)
Vulnerability from cvelistv5 – Published: 2021-10-28 03:13 – Updated: 2024-08-04 03:47
VLAI?
EPSS
Summary
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-43389 (GCVE-0-2021-43389)
Vulnerability from cvelistv5 – Published: 2021-11-04 18:39 – Updated: 2024-08-04 03:55
VLAI?
EPSS
Summary
An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
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CVE-2021-20317 (GCVE-0-2021-20317)
Vulnerability from cvelistv5 – Published: 2021-09-27 10:34 – Updated: 2024-08-03 17:37
VLAI?
EPSS
Summary
A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.
Severity ?
No CVSS data available.
CWE
Assigner
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CVE-2021-42739 (GCVE-0-2021-42739)
Vulnerability from cvelistv5 – Published: 2021-10-20 00:00 – Updated: 2024-08-04 03:38
VLAI?
EPSS
Summary
The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |
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CVE-2021-4001 (GCVE-0-2021-4001)
Vulnerability from cvelistv5 – Published: 2022-01-21 00:00 – Updated: 2024-08-03 17:16
VLAI?
EPSS
Summary
A race condition was found in the Linux kernel's ebpf verifier between bpf_map_update_elem and bpf_map_freeze due to a missing lock in kernel/bpf/syscall.c. In this flaw, a local user with a special privilege (cap_sys_admin or cap_bpf) can modify the frozen mapped address space. This flaw affects kernel versions prior to 5.16 rc2.
Severity ?
No CVSS data available.
CWE
Assigner
References
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CVE-2021-41864 (GCVE-0-2021-41864)
Vulnerability from cvelistv5 – Published: 2021-10-01 23:46 – Updated: 2024-08-04 03:22
VLAI?
EPSS
Summary
prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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Sightings
| Author | Source | Type | Date |
|---|
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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