CVE-2024-40767: Nova OpenStack Nova Vulnerable To Unauthorized Vulnerability

MODERATE
Advisory Identifier: GHSA-rm86-h44c-2r2m
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CVSS 6.5
CWE-552 CWE-436
Published
Advisory Summary

CVE-2024-40767 is a MODERATE (CVSS 6.5) openstack nova vulnerable to unauthorized vulnerability (CWE-552: Files or Directories Accessible to External Parties) affecting Nova libraries in the PyPI ecosystem. The issue involves openstack nova vulnerable to unauthorized access to potentially sensitive data. Remediation is available in the latest vendor maintenance releases.

CVE-2024-40767 at a Glance

CVE Identifier CVE-2024-40767
GHSA Identifier GHSA-rm86-h44c-2r2m
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-552: Files or Directories Accessible to External Parties
Affected Product Nova
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-40767

To remediate this vulnerability, upgrade all affected Nova dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Nova fixed: Latest secure release 
pip install Nova>=Latest secure release
Nova fixed: Latest secure release 
pip install Nova>=Latest secure release
Nova fixed: Latest secure release 
pip install Nova>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show Nova

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-40767, inspect your installed packages using pip:

pip show Nova

Analyze the terminal output to locate any version of Nova in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show Nova command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-552: Files or Directories Accessible to External Parties, where the product makes files or directories accessible to unauthorized actors, even though they should not be. In Nova, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2024-40767 Affected Nova Versions

3 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
Nova
pypi/Nova
PyPI
≤ 27.4.0
Nova
pypi/Nova
PyPI
≥ 28.0.0
≤ 28.2.0
Nova
pypi/Nova
PyPI
≥ 29.0.0
≤ 29.1.0

References

NVD — CVE-2024-40767 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-40767
Nova Source Repository REPOSITORY
https://github.com/openstack/nova
launchpad.net/bugs/2071734 WEB
https://launchpad.net/bugs/2071734
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2024/09/msg00017.html
review.opendev.org/c/openstack/nova/+/... WEB
https://review.opendev.org/c/openstack/nova/+/924731
Nova Security Information SECURITY
https://security.openstack.org
Nova Security Information SECURITY
https://security.openstack.org/ossa/OSSA-2024-002.html
Nova Security Information SECURITY
https://www.openwall.com/lists/oss-security/2024/07/23/2

Frequently Asked Questions

What is CVE-2024-40767?
CVE-2024-40767 is a security vulnerability in Nova involving OpenStack Nova vulnerable to unauthorized access to potentially sensitive data under CWE-552: Files or Directories Accessible to External Parties.
Which Nova versions are affected?
Affected versions include releases prior to current release patches across affected packages: Nova.
What version fixes CVE-2024-40767?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is Nova affected?
Yes, Nova is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2024-40767?
CVE-2024-40767 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-40767?
CVE-2024-40767 is classified under CWE-552: Files or Directories Accessible to External Parties (The product makes files or directories accessible to unauthorized actors, even though they should not be.).
How can I check PyPI dependencies for CVE-2024-40767?
Run the dependency tree command: 'pip show Nova'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rm86-h44c-2r2m",
  "modified" : "2025-11-04T19:49:52Z",
  "published" : "2024-07-24T06:31:10Z",
  "aliases" : [ "CVE-2024-40767" ],
  "summary" : "OpenStack Nova vulnerable to unauthorized access to potentially sensitive data ",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Nova"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "27.4.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Nova"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "28.0.0"
      }, {
        "last_affected" : "28.2.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Nova"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "29.0.0"
      }, {
        "last_affected" : "29.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-40767"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openstack/nova"
  }, {
    "type" : "WEB",
    "url" : "https://launchpad.net/bugs/2071734"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2024/09/msg00017.html"
  }, {
    "type" : "WEB",
    "url" : "https://review.opendev.org/c/openstack/nova/+/924731"
  }, {
    "type" : "WEB",
    "url" : "https://security.openstack.org"
  }, {
    "type" : "WEB",
    "url" : "https://security.openstack.org/ossa/OSSA-2024-002.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.openwall.com/lists/oss-security/2024/07/23/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-436", "CWE-552" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-07-25T14:27:53Z",
    "nvd_published_at" : "2024-07-24T05:15:12Z"
  }
}