WID-SEC-W-2023-2316
Vulnerability from csaf_certbund - Published: 2023-09-12 22:00 - Updated: 2025-01-13 23:00Summary
Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation
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 seine Privilegien zu erhöhen.
Betroffene Betriebssysteme: - Linux
Es existiert eine Schwachstelle im Linux Kernel. Diese ist auf einen Use-after-Free-Fehler in der Komponente "net/sched: sch_qfq" zurückzuführen, wodurch eine lokale Privilegieneskalation erreicht werden kann. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um seine Privilegien zu erweitern.
Affected products
Known affected
13 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Dell NetWorker vProxy<19.9.0.4
Dell / NetWorker
|
vProxy<19.9.0.4 | ||
|
Open Source Linux Kernel
Open Source
|
cpe:/o:linux:linux_kernel:-
|
— | |
|
Dell NetWorker vProxy<19.10
Dell / NetWorker
|
vProxy<19.10 | ||
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
IBM Security Guardium 11.4
IBM / Security Guardium
|
cpe:/a:ibm:security_guardium:11.4
|
11.4 | |
|
IBM Spectrum Protect Plus 10.1
IBM / Spectrum Protect
|
cpe:/a:ibm:spectrum_protect:plus_10.1
|
Plus 10.1 | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
IGEL OS <11.10.100
IGEL / OS
|
<11.10.100 | ||
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
IBM Security Guardium 11.5
IBM / Security Guardium
|
cpe:/a:ibm:security_guardium:11.5
|
11.5 |
References
95 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 seine Privilegien zu erh\u00f6hen.",
"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-2023-2316 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2316.json"
},
{
"category": "self",
"summary": "WID-SEC-2023-2316 - Portal Version",
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},
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{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2024-9315 vom 2025-01-13",
"url": "https://oss.oracle.com/pipermail/el-errata/2025-January/017000.html"
}
],
"source_lang": "en-US",
"title": "Linux Kernel: Schwachstelle erm\u00f6glicht Privilegieneskalation",
"tracking": {
"current_release_date": "2025-01-13T23:00:00.000+00:00",
"generator": {
"date": "2025-01-14T13:52:47.081+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.3.10"
}
},
"id": "WID-SEC-W-2023-2316",
"initial_release_date": "2023-09-12T22:00:00.000+00:00",
"revision_history": [
{
"date": "2023-09-12T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2023-10-05T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Amazon aufgenommen"
},
{
"date": "2023-10-08T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von Amazon aufgenommen"
},
{
"date": "2023-10-10T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2023-10-15T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2023-10-16T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2023-10-17T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2023-10-19T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von Ubuntu und Debian aufgenommen"
},
{
"date": "2023-10-22T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Ubuntu und SUSE aufgenommen"
},
{
"date": "2023-10-23T22:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2023-10-24T22:00:00.000+00:00",
"number": "11",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2023-10-26T22:00:00.000+00:00",
"number": "12",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2023-10-30T23:00:00.000+00:00",
"number": "13",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2023-10-31T23:00:00.000+00:00",
"number": "14",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2023-11-01T23:00:00.000+00:00",
"number": "15",
"summary": "Neue Updates von Amazon und Ubuntu aufgenommen"
},
{
"date": "2023-11-06T23:00:00.000+00:00",
"number": "16",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2023-11-13T23:00:00.000+00:00",
"number": "17",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2023-12-14T23:00:00.000+00:00",
"number": "18",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-01-11T23:00:00.000+00:00",
"number": "19",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2024-01-28T23:00:00.000+00:00",
"number": "20",
"summary": "Neue Updates von Dell aufgenommen"
},
{
"date": "2024-01-30T23:00:00.000+00:00",
"number": "21",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-02-04T23:00:00.000+00:00",
"number": "22",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-02-07T23:00:00.000+00:00",
"number": "23",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-02-12T23:00:00.000+00:00",
"number": "24",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-02-14T23:00:00.000+00:00",
"number": "25",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-02-15T23:00:00.000+00:00",
"number": "26",
"summary": "Neue Updates von SUSE und Red Hat aufgenommen"
},
{
"date": "2024-02-19T23:00:00.000+00:00",
"number": "27",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-02-20T23:00:00.000+00:00",
"number": "28",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-02-22T23:00:00.000+00:00",
"number": "29",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-02-25T23:00:00.000+00:00",
"number": "30",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-02-26T23:00:00.000+00:00",
"number": "31",
"summary": "Neue Updates von SUSE und Red Hat aufgenommen"
},
{
"date": "2024-02-28T23:00:00.000+00:00",
"number": "32",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-02-29T23:00:00.000+00:00",
"number": "33",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-03-04T23:00:00.000+00:00",
"number": "34",
"summary": "Neue Updates von ORACLE aufgenommen"
},
{
"date": "2024-03-07T23:00:00.000+00:00",
"number": "35",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-03-11T23:00:00.000+00:00",
"number": "36",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-03-12T23:00:00.000+00:00",
"number": "37",
"summary": "Neue Updates von Red Hat und IGEL aufgenommen"
},
{
"date": "2024-03-13T23:00:00.000+00:00",
"number": "38",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-03-14T23:00:00.000+00:00",
"number": "39",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-03-18T23:00:00.000+00:00",
"number": "40",
"summary": "Neue Updates von Ubuntu und Red Hat aufgenommen"
},
{
"date": "2024-03-19T23:00:00.000+00:00",
"number": "41",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-03-20T23:00:00.000+00:00",
"number": "42",
"summary": "Neue Updates von Oracle Linux und IBM aufgenommen"
},
{
"date": "2024-04-15T22:00:00.000+00:00",
"number": "43",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-04-22T22:00:00.000+00:00",
"number": "44",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-07-29T22:00:00.000+00:00",
"number": "45",
"summary": "Neue Updates von IBM aufgenommen"
},
{
"date": "2025-01-13T23:00:00.000+00:00",
"number": "46",
"summary": "Neue Updates von Oracle Linux aufgenommen"
}
],
"status": "final",
"version": "46"
}
},
"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": [
{
"branches": [
{
"category": "product_version_range",
"name": "vProxy\u003c19.9.0.4",
"product": {
"name": "Dell NetWorker vProxy\u003c19.9.0.4",
"product_id": "T032377"
}
},
{
"category": "product_version",
"name": "vProxy19.9.0.4",
"product": {
"name": "Dell NetWorker vProxy19.9.0.4",
"product_id": "T032377-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:dell:networker:vproxy_19.9.0.4"
}
}
},
{
"category": "product_version_range",
"name": "vProxy\u003c19.10",
"product": {
"name": "Dell NetWorker vProxy\u003c19.10",
"product_id": "T032378"
}
},
{
"category": "product_version",
"name": "vProxy19.10",
"product": {
"name": "Dell NetWorker vProxy19.10",
"product_id": "T032378-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:dell:networker:vproxy_19.10"
}
}
}
],
"category": "product_name",
"name": "NetWorker"
}
],
"category": "vendor",
"name": "Dell"
},
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "11.4",
"product": {
"name": "IBM Security Guardium 11.4",
"product_id": "1076561",
"product_identification_helper": {
"cpe": "cpe:/a:ibm:security_guardium:11.4"
}
}
},
{
"category": "product_version",
"name": "11.5",
"product": {
"name": "IBM Security Guardium 11.5",
"product_id": "1411051",
"product_identification_helper": {
"cpe": "cpe:/a:ibm:security_guardium:11.5"
}
}
}
],
"category": "product_name",
"name": "Security Guardium"
},
{
"branches": [
{
"category": "product_version",
"name": "Plus 10.1",
"product": {
"name": "IBM Spectrum Protect Plus 10.1",
"product_id": "T015895",
"product_identification_helper": {
"cpe": "cpe:/a:ibm:spectrum_protect:plus_10.1"
}
}
}
],
"category": "product_name",
"name": "Spectrum Protect"
}
],
"category": "vendor",
"name": "IBM"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c11.10.100",
"product": {
"name": "IGEL OS \u003c11.10.100",
"product_id": "T033380"
}
},
{
"category": "product_version",
"name": "11.10.100",
"product": {
"name": "IGEL OS 11.10.100",
"product_id": "T033380-fixed",
"product_identification_helper": {
"cpe": "cpe:/o:igel:os:11.10.100"
}
}
}
],
"category": "product_name",
"name": "OS"
}
],
"category": "vendor",
"name": "IGEL"
},
{
"branches": [
{
"category": "product_name",
"name": "Open Source Linux Kernel",
"product": {
"name": "Open Source Linux Kernel",
"product_id": "T029076",
"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-2023-4921",
"notes": [
{
"category": "description",
"text": "Es existiert eine Schwachstelle im Linux Kernel. Diese ist auf einen Use-after-Free-Fehler in der Komponente \"net/sched: sch_qfq\" zur\u00fcckzuf\u00fchren, wodurch eine lokale Privilegieneskalation erreicht werden kann. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um seine Privilegien zu erweitern."
}
],
"product_status": {
"known_affected": [
"T032377",
"T029076",
"T032378",
"67646",
"1076561",
"T015895",
"T004914",
"2951",
"T002207",
"T033380",
"T000126",
"398363",
"1411051"
]
},
"release_date": "2023-09-12T22:00:00.000+00:00",
"title": "CVE-2023-4921"
}
]
}
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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
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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.