WID-SEC-W-2023-1836
Vulnerability from csaf_certbund - Published: 2023-07-19 22:00 - Updated: 2023-07-19 22:00Es existiert eine Schwachstelle in QEMU. Der Fehler besteht in der Implementierung des 9p-Passthrough-Dateisystems (9pfs) aufgrund eines falschen Droppings von privilegierten Bits, wenn der Gast eine ausführbare Datei mit SUID oder SGID schreibt. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um seine Privilegien zu erweitern.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source QEMU
Open Source
|
cpe:/a:qemu:qemu:-
|
— |
{
"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 seine Privilegien zu erh\u00f6hen.",
"title": "Angriff"
},
{
"category": "general",
"text": "- UNIX\n- Linux\n- MacOS X\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-2023-1836 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1836.json"
},
{
"category": "self",
"summary": "WID-SEC-2023-1836 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1836"
},
{
"category": "external",
"summary": "PoC vom 2023-07-19",
"url": "https://github.com/v9fs/linux/issues/29"
},
{
"category": "external",
"summary": "Red Hat Bugzilla \u2013 Bug 2223985 vom 2023-07-19",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2223985"
}
],
"source_lang": "en-US",
"title": "QEMU: Schwachstelle erm\u00f6glicht Privilegieneskalation",
"tracking": {
"current_release_date": "2023-07-19T22:00:00.000+00:00",
"generator": {
"date": "2024-08-15T17:55:59.131+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.3.5"
}
},
"id": "WID-SEC-W-2023-1836",
"initial_release_date": "2023-07-19T22:00:00.000+00:00",
"revision_history": [
{
"date": "2023-07-19T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Open Source QEMU",
"product": {
"name": "Open Source QEMU",
"product_id": "T028825",
"product_identification_helper": {
"cpe": "cpe:/a:qemu:qemu:-"
}
}
}
],
"category": "vendor",
"name": "Open Source"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2023-1386",
"notes": [
{
"category": "description",
"text": "Es existiert eine Schwachstelle in QEMU. Der Fehler besteht in der Implementierung des 9p-Passthrough-Dateisystems (9pfs) aufgrund eines falschen Droppings von privilegierten Bits, wenn der Gast eine ausf\u00fchrbare Datei mit SUID oder SGID schreibt. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um seine Privilegien zu erweitern."
}
],
"product_status": {
"known_affected": [
"T028825"
]
},
"release_date": "2023-07-19T22:00:00.000+00:00",
"title": "CVE-2023-1386"
}
]
}
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