// For flags

CVE-2024-40767

openstack-nova: Regression VMDK/qcow arbitrary file access

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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.

En OpenStack Nova anterior a 27.4.1, 28 anterior a 28.2.1 y 29 anterior a 29.1.1, al proporcionar una imagen sin formato que en realidad es una imagen QCOW2 manipulada con una ruta de archivo de respaldo o una imagen plana VMDK con una ruta de archivo descriptiva, se El usuario autenticado puede convencer a los sistemas para que devuelvan una copia del contenido del archivo al que se hace referencia desde el servidor, lo que resulta en un acceso no autorizado a datos potencialmente confidenciales. Todas las implementaciones de Nova se ven afectadas. NOTA: este problema existe debido a una solución incompleta para CVE-2022-47951 y CVE-2024-32498.

An arbitrary file access flaw was found in Nova. By supplying a RAW format image, a specially crafted QCOW2 image with a backing file path, or a 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. This issue results in unauthorized access to potentially sensitive data.

Arnaud Morin discovered that Nova incorrectly handled certain raw format images. An authenticated user could use this issue to access arbitrary files on the server, possibly exposing sensitive information.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-07-10 CVE Reserved
  • 2024-07-24 CVE Published
  • 2025-03-19 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-552: Files or Directories Accessible to External Parties
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Openstack
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Nova
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*-
Affected
Redhat
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Openstack
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*-
Affected
Canonical
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Ubuntu Linux
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Affected
Debian
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Debian Linux
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Affected
Redhat
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Enterprise Linux
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*-
Affected