Verax NMS Password Replay Attack (CVE-2013-1351) I. BACKGROUND ---------------------- Verax NMS provides a service-oriented, unified management & monitoring of networks, applications and infrastructure enabling quick problem detection, root-cause analysis, reporting and automating recovery, reducing costs and shortening downtimes of IT service delivery. Source: http://www.veraxsystems.com/en/products/nms II. DESCRIPTION ---------------------- The primary client-side UI component of Verax NMS is a flash component named clientMain.swf. In addition to the Flash UI, Verax NMS uses AMF remoting for client/server communications. As part of the login process, when a user logs in to the application, two parameters (username and password) are passed to the authenticateUser operation, which is part of the userService destination. Before this information is sent to the server, the password is encrypted client-side using an implementation of RSA. Due to the fact that the private and public keys are hardcoded into clientMain.swf the encrypted password could be captured and replayed against the service by an attacker. III. AFFECTED PRODUCTS ---------------------- All versions of Verax NMS prior to 2.1.0 are vulnerable. IV. RECOMMENDATION ---------------------- Users should upgrade to version 2.1.0 of Verax NMS. V. CREDIT ---------------------- This vulnerability was discovered by Andrew Brooks.\ VI. REFERENCES ---------------------- CVE-2013-1351 http://download.veraxsystems.com/download/nms-2.1.0-release-notes.txt VII. TIMELINE ---------------------- 1/10/2013 - Vendor notified 1/11/2013 - Vendor acknowledges bug report 2/20/2013 - Vulnerability remediated and pushed to mainline