CVE-2024-40767: nova — Exploit & Fix

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.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-552 CWE-552

Affected Products

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

Advisories & Patches

https://security.openstack.org https://security.openstack.org/ossa/OSSA-2024-002.html https://security.openstack.org https://security.openstack.org/ossa/OSSA-2024-002.html

Exploits

https://launchpad.net/bugs/2071734 https://launchpad.net/bugs/2071734

Other References

https://www.openwall.com/lists/oss-security/2024/07/23/2 https://lists.debian.org/debian-lts-announce/2024/09/msg00017.html https://www.openwall.com/lists/oss-security/2024/07/23/2

Frequently Asked Questions

What is CVE-2024-40767? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-40767? +

CVE-2024-40767 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-40767? +

CVE-2024-40767 affects products from openstack, specifically: nova. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-40767? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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