CVE-2023-1386 - CVE House
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Status published Low CVE-2023-1386

Qemu: 9pfs: suid/sgid bits not dropped on file write

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

qemu, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 Advanced Virtualization, Red Hat Enterprise Linux 9, Fedora, Extra Packages for Enterprise Linux
Vulnerable Versions:
Unknown

Timeline

Official Publish: July 24th, 2023
Last Modified: September 25th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-281

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.