CVE-2024-40767: [OSSA-2024-002] OpenStack Nova: Incomplete file access fix and gssion for QCOW2 backing files and VMDK flat descriptors (CVE-2024-40767)
First published: Wed Jul 10 2024(Updated: )
Arnaud Morin (OVH) reported a vulnerability in Nova. By supplying a raw format image which is actually a specially crafted QCOW2 image with a backing file path or VMDK flat image with a descriptor file path, an authenticated user may convince systems to return a copy of the referenced file’s contents from the server resulting in unauthorized access to potentially sensitive data. All Nova deployments are affected.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/nova | 2:22.0.1-2+deb11u1 2:22.4.0-1~deb11u5 2:26.2.2-1~deb12u3 2:29.0.2-4 | |
| pip/Nova | >=29.0.0<=29.1.0 | |
| pip/Nova | >=28.0.0<=28.2.0 | |
| pip/Nova | <=27.4.0 | |
| OpenStack Nova-LXD | <27.4.1 | |
| OpenStack Nova-LXD | >=28.0.0<28.2.1 | |
| OpenStack Nova-LXD | >=29.0.0<29.1.1 |
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Reference Links
- https://launchpad.net/bugs/cve/CVE-2024-40767
- https://launchpad.net/bugs/2071734
- https://security.openstack.org
- https://security.openstack.org/ossa/OSSA-2024-002.html
- https://www.openwall.com/lists/oss-security/2024/07/23/2
- https://nvd.nist.gov/vuln/detail/CVE-2024-40767
- https://review.opendev.org/c/openstack/nova/+/924731
- https://github.com/advisories/GHSA-rm86-h44c-2r2m (Advisory)
- https://access.redhat.com/errata/RHSA-2024:5082
- https://access.redhat.com/errata/RHSA-2024:5083
- https://access.redhat.com/errata/RHSA-2024:5097
- https://access.redhat.com/errata/RHSA-2024:5113
- https://bugzilla.redhat.com/show_bug.cgi?id=2297217
- https://security-tracker.debian.org/tracker/CVE-2024-40767
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-40767
- https://ubuntu.com/security/CVE-2024-40767
Frequently Asked Questions
What is the severity of CVE-2024-40767?
The severity of CVE-2024-40767 is considered moderate, given its potential impact on system security when exploiting crafted image files.
How do I fix CVE-2024-40767?
To remediate CVE-2024-40767, upgrade Nova to a version that is not affected, such as 29.0.2-4 or higher.
Who reported the CVE-2024-40767 vulnerability?
The CVE-2024-40767 vulnerability was reported by Arnaud Morin from OVH.
What versions of Nova are impacted by CVE-2024-40767?
CVE-2024-40767 affects Nova versions from 27.0.0 up to 29.1.0.
Can an authenticated user exploit CVE-2024-40767?
Yes, an authenticated user can exploit CVE-2024-40767 by supplying specially crafted QCOW2 or VMDK images to the system.
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