Vulnerability Description
An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Libvirt | >= 4.1.0, <= 7.5.0 |
| Redhat | Enterprise Linux | 8.0 |
| Netapp | Ontap Select Deploy Administration Utility | - |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1986094Issue TrackingVendor Advisory
- https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050PatchThird Party Advisory
- https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd4Patch
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202210-06Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220331-0005/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1986094Issue TrackingVendor Advisory
- https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050PatchThird Party Advisory
- https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd4Patch
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202210-06Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220331-0005/Third Party Advisory
FAQ
What is CVE-2021-3667?
CVE-2021-3667 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not prope...
How severe is CVE-2021-3667?
CVE-2021-3667 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3667?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Libvirt, Redhat Enterprise Linux, Netapp Ontap Select Deploy Administration Utility, Debian Debian Linux.