CVE-2023-1386

LOW

QEMU - Improper Preservation of Permissions in 9p Passthrough Filesystem

Title source: llm
STIX 2.1

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.

References (5)

Core 5
Core References
Third Party Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-1386
Issue Tracking, Third Party Advisory issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2223985

Scores

CVSS v3 3.3
EPSS 0.0022
EPSS Percentile 12.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-281
Status published
Products (2)
fedoraproject/fedora 38
qemu/qemu
Published Jul 24, 2023
Tracked Since Feb 18, 2026