CVE-2024-40767

Publication date 23 July 2024

Last updated 19 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
nova	25.10 questing	Fixed 3:29.1.0+git2024080716.bb2d7f9c-0ubuntu1
	25.04 plucky	Fixed 3:29.1.0+git2024080716.bb2d7f9c-0ubuntu1
	24.10 oracular	Fixed 3:29.1.0+git2024080716.bb2d7f9c-0ubuntu1
	24.04 LTS noble	Fixed 3:29.0.1-0ubuntu1.4
	22.04 LTS jammy	Fixed 3:25.2.1-0ubuntu2.6
	20.04 LTS focal	Fixed 2:21.2.4-0ubuntu2.11
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation

Notes

mdeslaur

incomplete fix for OSSA-2024-001

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H