CVE-2024-40767

Name: CVE-2024-40767
Creator: NVD / NIST
Published: 2024-07-24T05:15:12.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.94%

Last modified Jun 17, 2026

CVE-2024-40767 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.94%

56.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-552

Affected Software

Vendor	Product	Versions
Openstack	Nova	< 27.4.1
Openstack	Nova	>= 28.0.0, < 28.2.1
Openstack	Nova	>= 29.0.0, < 29.1.1

References

https://launchpad.net/bugs/2071734Exploit, Issue Tracking
https://security.openstack.orgVendor Advisory
https://security.openstack.org/ossa/OSSA-2024-002.htmlVendor Advisory
https://www.openwall.com/lists/oss-security/2024/07/23/2Mailing List
https://launchpad.net/bugs/2071734Exploit, Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/09/msg00017.html
https://security.openstack.orgVendor Advisory
https://security.openstack.org/ossa/OSSA-2024-002.htmlVendor Advisory
https://www.openwall.com/lists/oss-security/2024/07/23/2Mailing List

Timeline

Published: Jul 24, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-40767?

How severe is CVE-2024-40767?

CVE-2024-40767 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.

How do I fix CVE-2024-40767?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-40767?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST