WID-SEC-W-2022-0219
Vulnerability from csaf_certbund - Published: 2021-08-31 22:00 - Updated: 2024-12-09 23:00Summary
Linux Kernel: Schwachstelle ermöglicht Denial of Service
Severity
Mittel
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Der Kernel stellt den Kern des Linux Betriebssystems dar.
Angriff: Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Linux
Es existiert eine Schwachstelle im Linux Kernel bezüglich des "memcg subsystem" in "ipc/sem.c". Die Funktion "semget" kann beliebig oft aufgerufen werden, ohne dass ein Accounting stattfindet. Ein lokaler Angreifer kann dies für einen Denial of Service Angriff ausnutzen.
Affected products
Known affected
7 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Open Source Linux Kernel
Open Source
|
cpe:/o:linux:linux_kernel:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— |
References
32 references
{
"document": {
"aggregate_severity": {
"text": "mittel"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2022-0219 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-0219.json"
},
{
"category": "self",
"summary": "WID-SEC-2022-0219 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0219"
},
{
"category": "external",
"summary": "Red Hat Bugzilla - Bug 1999675 vom 2021-09-01",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1999675"
},
{
"category": "external",
"summary": "PoC + Patch",
"url": "https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive@gmail.com/"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3178-1 vom 2021-09-21",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009473.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3179-1 vom 2021-09-21",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009475.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3177-1 vom 2021-09-21",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009470.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3192-1 vom 2021-09-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009486.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3217-1 vom 2021-09-23",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009503.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3205-1 vom 2021-09-23",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009505.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3206-1 vom 2021-09-23",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009499.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3207-1 vom 2021-09-23",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009508.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3387-1 vom 2021-10-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-October/009583.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3415-1 vom 2021-10-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-October/009591.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3205-2 vom 2021-10-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-October/009590.html"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5117-1 vom 2021-10-20",
"url": "https://ubuntu.com/security/notices/USN-5117-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5115-1 vom 2021-10-20",
"url": "https://ubuntu.com/security/notices/USN-5115-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5120-1 vom 2021-10-22",
"url": "https://ubuntu.com/security/notices/USN-5120-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5136-1 vom 2021-11-09",
"url": "https://ubuntu.com/security/notices/USN-5136-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5137-1 vom 2021-11-09",
"url": "https://ubuntu.com/security/notices/USN-5137-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5135-1 vom 2021-11-09",
"url": "https://ubuntu.com/security/notices/USN-5135-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5137-2 vom 2021-11-11",
"url": "https://ubuntu.com/security/notices/USN-5137-2"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:3876-1 vom 2021-12-02",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-December/009810.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:1975 vom 2022-05-10",
"url": "https://access.redhat.com/errata/RHSA-2022:1975"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:1988 vom 2022-05-10",
"url": "https://access.redhat.com/errata/RHSA-2022:1988"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2022-1988 vom 2022-05-17",
"url": "https://linux.oracle.com/errata/ELSA-2022-1988.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:4956 vom 2022-06-09",
"url": "https://access.redhat.com/errata/RHSA-2022:4956"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:5483 vom 2022-07-01",
"url": "https://access.redhat.com/errata/RHSA-2022:5483"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.10-2022-023 vom 2022-12-08",
"url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-023.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2022-039 vom 2022-12-14",
"url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-039.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-3244 vom 2022-12-22",
"url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2024-12868 vom 2024-12-09",
"url": "https://linux.oracle.com/errata/ELSA-2024-12868.html"
}
],
"source_lang": "en-US",
"title": "Linux Kernel: Schwachstelle erm\u00f6glicht Denial of Service",
"tracking": {
"current_release_date": "2024-12-09T23:00:00.000+00:00",
"generator": {
"date": "2024-12-10T09:53:52.805+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.3.10"
}
},
"id": "WID-SEC-W-2022-0219",
"initial_release_date": "2021-08-31T22:00:00.000+00:00",
"revision_history": [
{
"date": "2021-08-31T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2021-09-21T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-09-22T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-09-23T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-10-12T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-10-13T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-10-20T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2021-10-21T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2021-11-08T23:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2021-11-10T23:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2021-12-02T23:00:00.000+00:00",
"number": "11",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2022-05-10T22:00:00.000+00:00",
"number": "12",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2022-05-17T22:00:00.000+00:00",
"number": "13",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2022-06-08T22:00:00.000+00:00",
"number": "14",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2022-07-03T22:00:00.000+00:00",
"number": "15",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2022-12-08T23:00:00.000+00:00",
"number": "16",
"summary": "Neue Updates von Amazon aufgenommen"
},
{
"date": "2022-12-14T23:00:00.000+00:00",
"number": "17",
"summary": "Neue Updates von Amazon aufgenommen"
},
{
"date": "2022-12-22T23:00:00.000+00:00",
"number": "18",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2024-12-09T23:00:00.000+00:00",
"number": "19",
"summary": "Neue Updates von Oracle Linux aufgenommen"
}
],
"status": "final",
"version": "19"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Amazon Linux 2",
"product": {
"name": "Amazon Linux 2",
"product_id": "398363",
"product_identification_helper": {
"cpe": "cpe:/o:amazon:linux_2:-"
}
}
}
],
"category": "vendor",
"name": "Amazon"
},
{
"branches": [
{
"category": "product_name",
"name": "Debian Linux",
"product": {
"name": "Debian Linux",
"product_id": "2951",
"product_identification_helper": {
"cpe": "cpe:/o:debian:debian_linux:-"
}
}
}
],
"category": "vendor",
"name": "Debian"
},
{
"branches": [
{
"category": "product_name",
"name": "Open Source Linux Kernel",
"product": {
"name": "Open Source Linux Kernel",
"product_id": "6368",
"product_identification_helper": {
"cpe": "cpe:/o:linux:linux_kernel:-"
}
}
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T004914",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
}
}
}
],
"category": "vendor",
"name": "Oracle"
},
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux",
"product": {
"name": "Red Hat Enterprise Linux",
"product_id": "67646",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux:-"
}
}
}
],
"category": "vendor",
"name": "Red Hat"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE Linux",
"product": {
"name": "SUSE Linux",
"product_id": "T002207",
"product_identification_helper": {
"cpe": "cpe:/o:suse:suse_linux:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
},
{
"branches": [
{
"category": "product_name",
"name": "Ubuntu Linux",
"product": {
"name": "Ubuntu Linux",
"product_id": "T000126",
"product_identification_helper": {
"cpe": "cpe:/o:canonical:ubuntu_linux:-"
}
}
}
],
"category": "vendor",
"name": "Ubuntu"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-3759",
"notes": [
{
"category": "description",
"text": "Es existiert eine Schwachstelle im Linux Kernel bez\u00fcglich des \"memcg subsystem\" in \"ipc/sem.c\". Die Funktion \"semget\" kann beliebig oft aufgerufen werden, ohne dass ein Accounting stattfindet. Ein lokaler Angreifer kann dies f\u00fcr einen Denial of Service Angriff ausnutzen."
}
],
"product_status": {
"known_affected": [
"2951",
"T002207",
"67646",
"6368",
"T000126",
"398363",
"T004914"
]
},
"release_date": "2021-08-31T22:00:00.000+00:00",
"title": "CVE-2021-3759"
}
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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.
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- 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.
Vulnerability timeline
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.