Unrated severityNVD Advisory· Published Jul 24, 2023· Updated Sep 25, 2024
Qemu: 9pfs: suid/sgid bits not dropped on file write
CVE-2023-1386
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.
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Affected products
2Patches
Vulnerability mechanics
References
5- access.redhat.com/security/cve/CVE-2023-1386mitrevdb-entryx_refsource_REDHAT
- bugzilla.redhat.com/show_bug.cgimitreissue-trackingx_refsource_REDHAT
- github.com/advisories/GHSA-ppj8-867g-rgjrmitre
- github.com/v9fs/linux/issues/29mitre
- security.netapp.com/advisory/ntap-20230831-0005/mitre
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