CVE-2021-25955 : What You Need to Know

In Dolibarr ERP CRM, versions v2.8.1 to v13.0.2 are affected by a stored XSS vulnerability, enabling low privileged users to execute malicious scripts in the “Private Note” section. This poses a critical threat as it allows attackers to potentially gain admin privileges and perform privilege escalation.

Understanding CVE-2021-25955

This CVE relates to a stored XSS vulnerability in Dolibarr ERP CRM, impacting versions v2.8.1 to v13.0.2. The vulnerability allows unauthorized users to store and execute malicious scripts in the application, leading to severe consequences.

What is CVE-2021-25955?

The vulnerability in Dolibarr ERP CRM enables low privileged users to exploit a stored XSS issue, injecting scripts into the system that can be executed in the victim's browser, potentially leading to privilege escalation.

The Impact of CVE-2021-25955

The stored XSS vulnerability in Dolibarr ERP CRM poses a critical threat by allowing attackers to execute arbitrary code in the victim's browser. This could result in a full account takeover for highly privileged users and privilege escalation for low privileged ones.

Technical Details of CVE-2021-25955

This section delves into the vulnerability specifics and how it can be exploited.

Vulnerability Description

The vulnerability allows attackers to input malicious scripts into the “Private Note” field, which are then executed when the victim accesses the vulnerable page. This enables attackers to potentially take over admin accounts.

Affected Systems and Versions

Versions v2.8.1 to v13.0.2 of Dolibarr ERP CRM are impacted by this vulnerability.

Exploitation Mechanism

An attacker could exploit this vulnerability by inserting malicious scripts into the “Private Note” field and tricking a privileged user into accessing the compromised page.

Mitigation and Prevention

To address CVE-2021-25955, immediate actions and long-term security practices are necessary.

Immediate Steps to Take

Users are advised to update to version 14.0.0 of Dolibarr ERP CRM to mitigate the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Implementing strict access controls, regularly updating software, and conducting security training for users can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly applying security patches and updates provided by Dolibarr is crucial to maintaining a secure system.