Cross-Site Request Forgery in OpenSolution QuickCMS

Successful exploitation allows an attacker to perform unauthorized state-changing actions in QuickCMS in the security context of the authenticated victim. Because the issue affects multiple endpoints and all forms are considered potentially vulnerable, the impact depends on the victim’s privileges and the targeted functionality, and may include unauthorized administrative changes or other actions available to the victim account. The vulnerability can also be chained with other flaws, including a separate QuickCMS issue, to trigger additional impact such as denial of service through an authenticated administrator’s session.

Until a vendor fix is available, reduce exposure by restricting access to the administrative interface, minimizing the time administrators remain authenticated, and instructing privileged users not to browse untrusted sites while logged into QuickCMS. Compensating controls such as segregated administration workstations or browsers, additional confirmation steps for sensitive actions, and defensive cookie settings may reduce risk, but they do not replace proper server-side CSRF validation.

Implement robust anti-CSRF protections across all state-changing endpoints and forms in QuickCMS. Appropriate remediation includes generating unpredictable per-request or per-session CSRF tokens, validating those tokens server-side for every sensitive action, and ensuring that requests without valid tokens are rejected. Additional hardening should include reviewing all POST-based administrative and user-facing actions for consistent protection. Only version 6.8 was confirmed vulnerable in testing, but other versions may also require review and patching.