CVE-2005-2342 in BlackBerry Enterprise Server
Summary
by MITRE
Research in Motion (RIM) BlackBerry Router allows remote attackers to cause a denial of service (communication disruption) via crafted Server Routing Protocol (SRP) packets.
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Analysis
by VulDB Data Team • 07/19/2024
The vulnerability identified as CVE-2005-2342 affects Research in Motion's BlackBerry Router device, which serves as a critical communication gateway for mobile email and messaging services. This device operates as a bridge between corporate networks and the BlackBerry Enterprise Server, facilitating secure communication for millions of enterprise users worldwide. The flaw resides in the Server Routing Protocol implementation within the router's firmware, specifically in how it processes incoming network packets that contain routing information. Attackers can exploit this weakness by crafting malicious SRP packets designed to trigger unexpected behavior in the router's processing logic.
The technical nature of this vulnerability stems from insufficient input validation within the BlackBerry Router's network protocol stack. When the device receives specially crafted SRP packets, it fails to properly sanitize or validate the packet contents before processing them for routing decisions. This lack of proper validation creates a condition where malformed or unexpected packet structures can cause the router to enter an unstable state, ultimately leading to a complete service disruption. The vulnerability operates at the network protocol level, making it particularly dangerous as it can be exploited without requiring authentication or prior access to the device. The flaw represents a classic example of a buffer overflow or input validation failure that has been classified under CWE-20, which encompasses weaknesses related to improper input validation.
The operational impact of this vulnerability extends far beyond simple service disruption, as it can effectively sever critical communication channels for enterprise organizations relying on BlackBerry services. When exploited successfully, the denial of service condition renders the router incapable of processing legitimate network traffic, causing communication failures between corporate networks and the BlackBerry Enterprise Server. This disruption can affect hundreds or thousands of users simultaneously, depending on the network topology and the number of affected routers. Organizations using BlackBerry services for mission-critical communications face significant business continuity risks, as the vulnerability can be exploited remotely from anywhere on the internet without requiring physical access or authentication credentials. The attack vector demonstrates characteristics consistent with ATT&CK technique T1498, which involves deliberate disruption of services through network-based attacks.
Mitigation strategies for this vulnerability require immediate firmware updates from Research in Motion, as the issue stems from implementation flaws within the device's core protocol processing code. Network administrators should implement network segmentation and access controls to limit exposure, while monitoring for anomalous SRP packet patterns that may indicate exploitation attempts. The vulnerability highlights the importance of secure protocol implementation and proper input validation in network infrastructure devices. Organizations should also consider implementing intrusion detection systems capable of identifying malformed SRP traffic patterns and establishing incident response procedures for handling service disruption events. Given the nature of the vulnerability, which allows remote exploitation without authentication, organizations must prioritize immediate patch deployment and network monitoring to prevent successful exploitation attempts. The incident underscores the critical need for robust security practices in enterprise communication infrastructure and demonstrates how seemingly minor protocol implementation flaws can result in significant operational impacts across large-scale enterprise networks.