CVE-2021-25954 : Exploit Details and Defense Strategies

A vulnerability has been identified in the "Dolibarr" application versions 2.8.1 to 13.0.4 that allows a low privileged attacker to modify a Private Note, typically restricted to administrators. This vulnerability could lead to unauthorized access to sensitive information.

Understanding CVE-2021-25954

This CVE pertains to an improper access control issue in the Dolibarr application, allowing unauthorized actors to modify a Private Note.

What is CVE-2021-25954?

The CVE-2021-25954 vulnerability in Dolibarr version 2.8.1 to 13.0.4 allows low privileged users to tamper with a Private Note that should only be editable by administrators. Attackers can exploit this to gain unauthorized access to privileged information.

The Impact of CVE-2021-25954

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 4.3. Attackers with low privileges can potentially breach confidentiality and integrity by modifying sensitive notes.

Technical Details of CVE-2021-25954

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability occurs due to improper access control, enabling unauthorized actors to modify Private Notes designated only for administrators in Dolibarr.

Affected Systems and Versions

The affected versions include Dolibarr 2.8.1 up to 13.0.4, exposing instances to the risk of unauthorized data modifications.

Exploitation Mechanism

Attackers with low privileges can exploit the vulnerability by accessing the "/adherents/note.php?id=1" endpoint, allowing them to alter Private Notes.

Mitigation and Prevention

To safeguard systems from potential exploits, immediate steps should be taken along with the adoption of long-term security practices.

Immediate Steps to Take

It is recommended to update the Dolibarr application to version 14.0.0 to mitigate the vulnerability effectively.

Long-Term Security Practices

Regularly monitor and manage user permissions and access controls to prevent unauthorized modifications to sensitive data.

Patching and Updates

Ensure timely patching and software updates to address security vulnerabilities and enhance system security.