dbcve.org
Improper Access ControlWeakness · CWE-284

CVE-2024-51734

HIGH · 8.7 CVSS v4.0 Published 2024-11-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
96/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Zope AccessControl provides a general security framework for use in Zope. In affected versions anonymous users can delete the user data maintained by an `AccessControl.userfolder.UserFolder` which may prevent any privileged access. This problem has been fixed in version 7.2. Users are advised to upgrade. Users unable to upgrade may address the issue by adding `data__roles__ = ()` to `AccessControl.userfolder.UserFolder`.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Anonymous users can delete user data maintained by AccessControl.userfolder.UserFolder in Zope versions prior to 7.2, potentially preventing any privileged access to the system. This is a direct vulnerability in Zope's security framework that allows unauthenticated users to modify critical user data.

MitigationUpgrade to Zope AccessControl version 7.2, or alternatively add `data__roles__ = ()` to the AccessControl.userfolder.UserFolder class to prevent anonymous users from deleting user data.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed Zope or AccessControl version
    Run `pip show Zope` or `pip show AccessControl` to see the installed version number, or check your package requirements file for the version constraint
    Affected if The version shown is lower than 7.2 (e.g., 7.1, 7.0, 6.x, etc.)
  2. Identify if AccessControl.userfolder.UserFolder is in use
    Search your codebase or Zope configuration for imports or usage of `AccessControl.userfolder.UserFolder`, or check if your application uses a user folder of type 'User Folder' in Zope
    Affected if Your application uses UserFolder from the AccessControl.userfolder module for authentication
  3. Verify anonymous access to user management
    Inspect your Zope site or configuration to determine if anonymous (unauthenticated) users have any access rights to the user management interface or UserFolder
    Affected if Anonymous users have any form of access or permission related to user data management
  4. Check for vulnerable UserFolder permission settings
    Review the Zope security settings for the UserFolder object to see if anonymous role has permissions to delete or manage users, or inspect the ZODB for AccessControl.userfolder.UserFolder instances with default permissions
    Affected if Anonymous role has delete or manage permissions on the UserFolder object

You are affected if your Zope installation is version 7.1 or earlier and anonymous users can access the AccessControl.userfolder.UserFolder, allowing them to delete user data.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to Zope AccessControl version 7.2, or alternatively add `data__roles__ = ()` to the AccessControl.userfolder.UserFolder class to prevent anonymous users from deleting user data.

Recommended fix Moderate confidence

Zope AccessControl 7.2

  1. Upgrade Zope AccessControl to version 7.2 or later. This is the primary and most durable fix for the vulnerability.
  2. If upgrading is not immediately possible, apply the configuration workaround by adding `data__roles__ = ()` to the `AccessControl.userfolder.UserFolder` class definition to prevent anonymous users from deleting user data.

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,390
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-51734 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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