What’s Vulnerable › Vulnerabilities

CVE-2024-40767

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-07-24 · updated 2026-06-17
• Weakness: CWE-552

Description

In OpenStack Nova before 27.4.1, 28 before 28.2.1, and 29 before 29.1.1, by supplying a raw format image that is actually a 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. NOTE: this issue exists because of an incomplete fix for CVE-2022-47951 and CVE-2024-32498.

Affected products

• OpenStack Nova: before 27.4.1; from 28.0.0 before 28.2.1; from 29.0.0 before 29.1.1 — fixed in 27.4.1, 28.2.1, 29.1.1

How to fix

Upgrade to a fixed version: OpenStack Nova 27.4.1, 28.2.1, 29.1.1. Check the vendor advisory for mitigations.

References

• 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://launchpad.net/bugs/2071734
• https://lists.debian.org/debian-lts-announce/2024/09/msg00017.html
• https://security.openstack.org
• https://security.openstack.org/ossa/OSSA-2024-002.html
• https://www.openwall.com/lists/oss-security/2024/07/23/2

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