A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the guest to elevate their privileges within the guest and help a host local user to elevate privileges on the host.

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Advisories
Source ID Title
EUVD EUVD EUVD-2023-23642 A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the guest to elevate their privileges within the guest and help a host local user to elevate privileges on the host.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 25 Sep 2024 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-09-25T19:57:50.614Z

Reserved: 2023-03-14T10:31:59.556Z

Link: CVE-2023-1386

cve-icon Vulnrichment

Updated: 2024-08-02T05:49:11.113Z

cve-icon NVD

Status : Modified

Published: 2023-07-24T16:15:11.150

Modified: 2024-11-21T07:39:05.003

Link: CVE-2023-1386

cve-icon Redhat

Severity : Low

Publid Date: 2023-03-07T00:00:00Z

Links: CVE-2023-1386 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses