CVE-2018-5756 Explained : Impact and Mitigation

Open-Xchange OX App Suite versions prior to 7.6.3-rev36, 7.8.x prior to 7.8.2-rev39, 7.8.3 prior to 7.8.3-rev44, and 7.8.4 prior to 7.8.4-rev22 have a flaw in the backend component allowing authenticated remote users to delete tasks.

Understanding CVE-2018-5756

This CVE involves a vulnerability in Open-Xchange OX App Suite versions that could be exploited by authenticated remote users to delete tasks.

What is CVE-2018-5756?

The flaw in the backend component of Open-Xchange OX App Suite versions allows authenticated remote users to delete tasks by exploiting inadequate verification of folder-to-object association.

The Impact of CVE-2018-5756

The vulnerability enables authenticated remote users to delete any tasks by utilizing the task id in a delete action to api/tasks.

Technical Details of CVE-2018-5756

This section provides more technical insights into the CVE.

Vulnerability Description

The backend component in affected versions does not properly check for folder-to-object association, leading to the deletion of arbitrary tasks by authenticated remote users.

Affected Systems and Versions

Open-Xchange OX App Suite versions prior to 7.6.3-rev36
7.8.x versions before 7.8.2-rev39
7.8.3 versions before 7.8.3-rev44
7.8.4 versions before 7.8.4-rev22

Exploitation Mechanism

Authenticated remote users can exploit the flaw by using the task id in a delete action to api/tasks.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial.

Immediate Steps to Take

Update Open-Xchange OX App Suite to versions 7.6.3-rev36, 7.8.2-rev39, 7.8.3-rev44, or 7.8.4-rev22 or newer.
Monitor and restrict access to the affected component.

Long-Term Security Practices

Regularly review and update security configurations.
Conduct security training for users to prevent unauthorized actions.

Patching and Updates

Apply patches and updates provided by Open-Xchange to address this vulnerability.