CVE-2021-43782 : Vulnerability Insights and Analysis

Tuleap contains an indirect LDAP injection vulnerability that could allow malicious users to suspend accounts or take over other accounts.

Understanding CVE-2021-43782

What is CVE-2021-43782?

Tuleap is an open-source tool for traceability in application and system development. The vulnerability in Tuleap allows improper handling of LDAP attributes, leading to account manipulation.

The Impact of CVE-2021-43782

The vulnerability has a CVSS base score of 6.7, posing a medium-severity risk. It can result in high confidentiality and integrity impact, requiring high privileges for exploitation.

Technical Details of CVE-2021-43782

Vulnerability Description

The flaw occurs due to inadequate filtering of search filters created from the ldap_id attribute during daily synchronization. This oversight enables account suspension and unauthorized access.

Affected Systems and Versions

Tuleap versions < 13.2.99.83 are affected
Tuleap Enterprise Edition versions >= 13.1-1, < 13.1-6 are impacted
Tuleap Enterprise Edition versions >= 13.2-1, < 13.2-4 are vulnerable

Exploitation Mechanism

Malicious users with site administrator or LDAP operator roles can exploit the issue
LDAP plugin activation is required on the Tuleap instance for successful exploitation

Mitigation and Prevention

Immediate Steps to Take

Update Tuleap to the fixed versions: 13.2.99.83, 13.1-6, 13.2-4
Monitor accounts for any unauthorized activities

Long-Term Security Practices

Regularly review and update security configurations
Enforce least privilege access control

Patching and Updates

Apply vendor-released patches promptly to safeguard against known vulnerabilities