WID-SEC-W-2023-3051
Vulnerability from csaf_certbund - Published: 2021-08-12 22:00 - Updated: 2023-12-04 23:00Es existiert eine Schwachstelle in GNU libc in der Funktion "sysdeps/unix/sysv/linux/mq_notify.c". Der Fehler basiert auf einem fehlerhaften Umgang mit bestimmten Daten wodurch eine Null-Zeiger-Dereferenzierung auftritt. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um nicht näher spezifizierte Auswirkungen zu verursachen.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— |
{
"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": "Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalit\u00e4t bereitstellt.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann eine Schwachstelle in GNU libc ausnutzen, um einen nicht n\u00e4her spezifizierten Angriff durchzuf\u00fchren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- UNIX\n- Linux\n- Windows\n- Sonstiges",
"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-2023-3051 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-3051.json"
},
{
"category": "self",
"summary": "WID-SEC-2023-3051 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-3051"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS-2023-2371 vom 2023-12-05",
"url": "https://alas.aws.amazon.com/AL2/ALAS-2023-2371.html"
},
{
"category": "external",
"summary": "Sourceware Bugzilla - Bug 28213 vom 2021-08-12",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=28213"
}
],
"source_lang": "en-US",
"title": "GNU libc: Schwachstelle erm\u00f6glicht nicht spezifizierten Angriff",
"tracking": {
"current_release_date": "2023-12-04T23:00:00.000+00:00",
"generator": {
"date": "2024-08-15T18:02:19.131+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.3.5"
}
},
"id": "WID-SEC-W-2023-3051",
"initial_release_date": "2021-08-12T22:00:00.000+00:00",
"revision_history": [
{
"date": "2021-08-12T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2021-09-16T22:00:00.000+00:00",
"number": "2",
"summary": "Referenz(en) aufgenommen: FEDORA-2021-16DC1F33AF"
},
{
"date": "2023-12-04T23:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von Amazon aufgenommen"
}
],
"status": "final",
"version": "3"
}
},
"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": "Open Source GNU libc \u003c 2.34",
"product": {
"name": "Open Source GNU libc \u003c 2.34",
"product_id": "T019687",
"product_identification_helper": {
"cpe": "cpe:/a:gnu:glibc:2.34"
}
}
}
],
"category": "vendor",
"name": "Open Source"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-38604",
"notes": [
{
"category": "description",
"text": "Es existiert eine Schwachstelle in GNU libc in der Funktion \"sysdeps/unix/sysv/linux/mq_notify.c\". Der Fehler basiert auf einem fehlerhaften Umgang mit bestimmten Daten wodurch eine Null-Zeiger-Dereferenzierung auftritt. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um nicht n\u00e4her spezifizierte Auswirkungen zu verursachen."
}
],
"product_status": {
"known_affected": [
"398363"
]
},
"release_date": "2021-08-12T22:00:00.000+00:00",
"title": "CVE-2021-38604"
}
]
}
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.
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
Loading timeline…
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.
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.