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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | All versions |
| Fedoraproject | Fedora | 38 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2023-1386Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2223985Issue TrackingThird Party Advisory
- https://github.com/advisories/GHSA-ppj8-867g-rgjr
- https://github.com/v9fs/linux/issues/29
- https://security.netapp.com/advisory/ntap-20230831-0005/
- https://access.redhat.com/security/cve/CVE-2023-1386Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2223985Issue TrackingThird Party Advisory
- https://github.com/advisories/GHSA-ppj8-867g-rgjr
- https://github.com/v9fs/linux/issues/29
- https://security.netapp.com/advisory/ntap-20230831-0005/
FAQ
What is CVE-2023-1386?
CVE-2023-1386 is a vulnerability with a CVSS score of 3.3 (LOW). 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...
How severe is CVE-2023-1386?
CVE-2023-1386 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-1386?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Fedoraproject Fedora.