CVE-2021-3667
First published: Mon Jul 26 2021(Updated: )
A flaw was found in the libvirt virStoragePoolLookupByTargetPath API. The storagePoolLookupByTargetPath() function does not properly release a locked object (virStoragePoolObj) 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. Upstream fix: <a href="https://libvirt.org/git/?p=libvirt.git;a=commit;h=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87">https://libvirt.org/git/?p=libvirt.git;a=commit;h=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87</a>
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Libvirt | <=7.5.0 | |
| Redhat Enterprise Linux | =8.0 | |
| NetApp ONTAP Select Deploy administration utility | ||
| debian/libvirt | 7.0.0-3+deb11u3 9.0.0-4+deb12u1 10.7.0-3 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1986094
- https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
- https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
- https://security.gentoo.org/glsa/202210-06
- https://security.netapp.com/advisory/ntap-20220331-0005/
- https://libvirt.org/git/?p=libvirt.git;a=commit;h=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1986113
- https://libvirt.org/git/?p=libvirt.git;a=commit;h=7aa0e8c0cb8a6293d0c6f7e3d29c13b96dec2129
- https://access.redhat.com/errata/RHSA-2021:3703
- https://access.redhat.com/security/cve/cve-2021-3667
- https://access.redhat.com/errata/RHSA-2021:3704
- https://access.redhat.com/errata/RHSA-2021:4191
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
- https://launchpad.net/bugs/cve/CVE-2021-3667
- https://security-tracker.debian.org/tracker/CVE-2021-3667
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3667
- https://nvd.nist.gov/vuln/detail/CVE-2021-3667
- https://ubuntu.com/security/CVE-2021-3667
Frequently Asked Questions
What is CVE-2021-3667?
CVE-2021-3667 is an improper locking issue found in the virStoragePoolLookupByTargetPath API of libvirt.
What is the severity of CVE-2021-3667?
The severity of CVE-2021-3667 is medium with a CVSS score of 6.5.
Which software versions are affected by CVE-2021-3667?
The affected software versions include libvirt 6.0.0-0ubuntu8.16, libvirt 7.6.0-0ubuntu3, libvirt 7.6.0-1, libvirt 9.0.0-4, libvirt 9.8.0-2, Redhat Libvirt 7.5.0, Redhat Enterprise Linux 8.0, and NetApp ONTAP Select Deploy administration utility.
How can I fix the vulnerability in libvirt?
To fix the vulnerability in libvirt, update to the recommended versions provided for your operating system or package.
Where can I find more information about CVE-2021-3667?
More information about CVE-2021-3667 can be found at the following references: [Bugzilla Red Hat](https://bugzilla.redhat.com/show_bug.cgi?id=1986094), [GitLab Commit](https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87), [Gentoo GLSA](https://security.gentoo.org/glsa/202210-06).
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