Vulnerability in Qemu
CVE-2023-1386
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2023-1386 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- github.com/advisories/GHSA-ppj8-867g-rgjr
- github.com/v9fs/linux/issues/29
- security.netapp.com/advisory/ntap-20230831-0005/
Frequently asked questions
- What is CVE-2023-1386?
- CVE-2023-1386 is a low-severity vulnerability in Qemu, classified under Improper Preservation of Permissions. CVSS score: 3.3/10. Published 2023-07-24.
- How severe is CVE-2023-1386?
- Low severity. CVSS v3 base score is 3.3 out of 10.