Cross-Site Request Forgery (CSRF) in livehelperchat/livehelperchat

Vulnerability

Live Helper Chat, an open-source live support application, is vulnerable to Cross-Site Request Forgery (CSRF) in versions prior to the commit f59ffb02984c0ce2fbb19ac39365066507de9370. The vulnerability exists because state-changing operations do not require a CSRF token, allowing an attacker to trick an authenticated administrator into performing unintended actions. [2] [3]

Exploitation

To exploit this vulnerability, an attacker must craft a malicious webpage or email that triggers a forged request to a sensitive endpoint in Live Helper Chat. The victim must be logged in as an administrator and visit the attacker's link or page while the session is active. No special network position is required; the attack can be delivered remotely via social engineering. [2] [4]

Impact

Successful exploitation allows the attacker to perform any administrative action on behalf of the victim, such as modifying settings, creating or deleting users, changing permissions, or executing other state-changing operations. This leads to a complete compromise of the application's integrity and availability, potentially exposing sensitive data. [2] [4]

Mitigation

The fix is included in commit f59ffb02984c0ce2fbb19ac39365066507de9370 on the livehelperchat/livehelperchat repository. Administrators should update their installation to the latest version that includes this commit. If upgrading is not immediately possible, consider implementing additional CSRF protections such as custom header validation or same-site cookie attributes, though no official workaround is documented. [2] [3]