CVE-2023-1386
Qemu: 9pfs: suid/sgid bits not dropped on file write
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-281 |
| Vendor | n/a |
| Product | qemu |
| Published | Jul 24, 2023 |
| Last Updated | Sep 25, 2024 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
n/a / qemu
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8 Advanced Virtualization
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Fedora / Fedora
All versions affected Fedora / Extra Packages for Enterprise Linux
All versions affected References
access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-1386 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2223985 github.com: https://github.com/advisories/GHSA-ppj8-867g-rgjr github.com: https://github.com/v9fs/linux/issues/29 security.netapp.com: https://security.netapp.com/advisory/ntap-20230831-0005/