WID-SEC-W-2022-1275
Vulnerability from csaf_certbund - Published: 2021-01-18 23:00 - Updated: 2026-06-09 22:00Summary
QEMU: Schwachstelle ermöglicht Denial of Service
Severity
Niedrig
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: QEMU ist eine freie Virtualisierungssoftware, die die gesamte Hardware eines Computers emuliert.
Angriff: Ein lokaler Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Linux
Affected products
Known affected
8 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source QEMU
Open Source
|
cpe:/a:qemu:qemu:-
|
— | |
|
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:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Open Source CentOS
Open Source
|
cpe:/o:centos:centos:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— |
References
28 references
{
"document": {
"aggregate_severity": {
"text": "niedrig"
},
"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": "QEMU ist eine freie Virtualisierungssoftware, die die gesamte Hardware eines Computers emuliert.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann eine Schwachstelle in QEMU 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-2022-1275 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-1275.json"
},
{
"category": "self",
"summary": "WID-SEC-2022-1275 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-1275"
},
{
"category": "external",
"summary": "Red Hat Bugzilla - Bug 1917446 vom 2021-01-18",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1917446"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-4725-1 vom 2021-02-08",
"url": "https://ubuntu.com/security/notices/USN-4725-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-4725-1 vom 2021-02-08",
"url": "https://usn.ubuntu.com/4725-1"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-2560 vom 2021-02-18",
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2021-9104 vom 2021-03-12",
"url": "https://linux.oracle.com/errata/ELSA-2021-9104.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2021-9109 vom 2021-03-16",
"url": "https://linux.oracle.com/errata/ELSA-2021-9109.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:1243-1 vom 2021-04-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008646.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:1242-1 vom 2021-04-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008652.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:1241-1 vom 2021-04-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008649.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:1240-1 vom 2021-04-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008648.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:1245-1 vom 2021-04-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008647.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:1244-1 vom 2021-04-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008650.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:14704-1 vom 2021-04-20",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008660.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:1305-1 vom 2021-04-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008671.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2021:14706-1 vom 2021-04-23",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008673.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2021:1762 vom 2021-05-18",
"url": "https://access.redhat.com/errata/RHSA-2021:1762"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2021:2322 vom 2021-06-09",
"url": "https://access.redhat.com/errata/RHSA-2021:2322"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2021-2322 vom 2021-06-09",
"url": "http://linux.oracle.com/errata/ELSA-2021-2322.html"
},
{
"category": "external",
"summary": "CentOS Security Advisory CESA-2021:2322 vom 2021-06-14",
"url": "http://centos-announce.2309468.n4.nabble.com/CentOS-announce-CESA-2021-2322-Moderate-CentOS-7-qemu-kvm-Security-Update-tp4646196.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS-2021-1671 vom 2021-06-23",
"url": "https://alas.aws.amazon.com/AL2/ALAS-2021-1671.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2021:2529 vom 2021-06-23",
"url": "https://access.redhat.com/errata/RHSA-2021:2529"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5010-1 vom 2021-07-15",
"url": "https://ubuntu.com/security/notices/USN-5010-1"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-3099 vom 2022-09-05",
"url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2024-12604 vom 2024-09-02",
"url": "https://linux.oracle.com/errata/ELSA-2024-12604.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2024-12605 vom 2024-09-02",
"url": "https://linux.oracle.com/errata/ELSA-2024-12605.html"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-8412-1 vom 2026-06-09",
"url": "https://ubuntu.com/security/notices/USN-8412-1"
}
],
"source_lang": "en-US",
"title": "QEMU: Schwachstelle erm\u00f6glicht Denial of Service",
"tracking": {
"current_release_date": "2026-06-09T22:00:00.000+00:00",
"generator": {
"date": "2026-06-10T08:01:12.030+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2022-1275",
"initial_release_date": "2021-01-18T23:00:00.000+00:00",
"revision_history": [
{
"date": "2021-01-18T23:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2021-02-08T23:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2021-02-18T23:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2021-03-11T23:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2021-03-15T23:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2021-04-18T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-04-20T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-04-22T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-04-25T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2021-05-18T22:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2021-06-08T22:00:00.000+00:00",
"number": "11",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2021-06-09T22:00:00.000+00:00",
"number": "12",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2021-06-14T22:00:00.000+00:00",
"number": "13",
"summary": "Neue Updates von CentOS aufgenommen"
},
{
"date": "2021-06-23T22:00:00.000+00:00",
"number": "14",
"summary": "Neue Updates von Amazon und Red Hat aufgenommen"
},
{
"date": "2021-07-15T22:00:00.000+00:00",
"number": "15",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2022-09-04T22:00:00.000+00:00",
"number": "16",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2024-09-02T22:00:00.000+00:00",
"number": "17",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-06-09T22:00:00.000+00:00",
"number": "18",
"summary": "Neue Updates von Ubuntu aufgenommen"
}
],
"status": "final",
"version": "18"
}
},
"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 CentOS",
"product": {
"name": "Open Source CentOS",
"product_id": "1727",
"product_identification_helper": {
"cpe": "cpe:/o:centos:centos:-"
}
}
},
{
"category": "product_name",
"name": "Open Source QEMU",
"product": {
"name": "Open Source QEMU",
"product_id": "185878",
"product_identification_helper": {
"cpe": "cpe:/a:qemu:qemu:-"
}
}
}
],
"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-2020-29443",
"product_status": {
"known_affected": [
"185878",
"2951",
"T002207",
"67646",
"T000126",
"398363",
"1727",
"T004914"
]
},
"release_date": "2021-01-18T23:00:00.000+00:00",
"title": "CVE-2020-29443"
}
]
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
- 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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
Loading…
Loading…
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.
Loading…
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.