Improper Preservation of Permissions The advisory has been revoked - it doesn't affect any version of package qemu (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1404-QEMU-5798367
- published21 Jul 2023
- disclosed24 Jul 2023
Introduced: 21 Jul 2023
CVE-2023-1386 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:14.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-1386
- https://access.redhat.com/security/cve/CVE-2023-1386
- https://bugzilla.redhat.com/show_bug.cgi?id=2223985
- https://github.com/advisories/GHSA-ppj8-867g-rgjr
- https://github.com/v9fs/linux/issues/29
- https://security.netapp.com/advisory/ntap-20230831-0005/