CVE-2010-2604 in BlackBerry Enterprise Server
Summary
by MITRE
Multiple buffer overflows in the PDF Distiller in the BlackBerry Attachment Service component in Research In Motion (RIM) BlackBerry Enterprise Server 4.1.3 through 5.0.2, and Enterprise Server Express 5.0.1 and 5.0.2, allow remote attackers to execute arbitrary code via a crafted PDF file.
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Analysis
by VulDB Data Team • 01/23/2025
The vulnerability identified as CVE-2010-2604 represents a critical security flaw within the BlackBerry Enterprise Server's Attachment Service component, specifically affecting PDF Distiller functionality. This issue impacts RIM's enterprise email security infrastructure and affects versions ranging from BlackBerry Enterprise Server 4.1.3 through 5.0.2, along with Enterprise Server Express versions 5.0.1 and 5.0.2. The flaw manifests as multiple buffer overflow conditions that occur during the processing of PDF attachments, creating a significant attack surface for remote threat actors seeking to compromise enterprise email systems.
The technical implementation of this vulnerability stems from inadequate input validation within the PDF Distiller module responsible for converting PDF attachments into alternative formats for email delivery. When the system processes a malformed or crafted PDF file, the buffer overflow conditions allow attackers to overwrite adjacent memory locations with malicious code. This memory corruption occurs due to insufficient bounds checking on user-supplied PDF data, particularly in areas handling PDF object parsing and rendering operations. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, where attacker-controlled data exceeds the allocated buffer size and corrupts adjacent memory regions. The flaw specifically affects the PDF processing pipeline within the Attachment Service, which serves as a critical component for enterprise email security by handling document attachments and converting them to formats compatible with various mobile devices and email clients.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete system compromise capabilities within the enterprise email infrastructure. Remote attackers can leverage this vulnerability to execute arbitrary code with the privileges of the Attachment Service process, potentially leading to full system takeover, data exfiltration, and persistent access to corporate networks. The attack vector requires only the delivery of a specially crafted PDF attachment to a target email account, making it particularly dangerous for enterprise environments where email remains a primary communication channel. This vulnerability directly aligns with ATT&CK technique T1190 for Exploit Public-Facing Application, as it represents an unauthenticated remote code execution vulnerability in a publicly accessible enterprise email service. The implications for enterprise security are severe, as compromise of the BlackBerry Enterprise Server can provide attackers with access to thousands of corporate email accounts and sensitive business data.
Mitigation strategies for CVE-2010-2604 require immediate implementation of security patches from RIM, as the vulnerability cannot be effectively addressed through configuration changes alone. Organizations should implement network-level controls to filter PDF attachments at email gateway levels, particularly when the attachment service is not essential for business operations. The recommended approach includes disabling PDF processing capabilities within the Attachment Service or implementing strict content filtering rules that prevent potentially malicious PDF files from entering the enterprise network. Additionally, organizations should consider deploying intrusion detection systems to monitor for suspicious PDF processing activities and implement network segmentation to limit the potential lateral movement if exploitation occurs. Security teams must also conduct thorough vulnerability assessments of their email infrastructure to identify any additional components that may be vulnerable to similar buffer overflow conditions, particularly those handling untrusted input from email attachments. The vulnerability underscores the importance of regular security updates and proper input validation in enterprise email systems, as it demonstrates how seemingly benign document processing functionality can become a critical attack vector for sophisticated adversaries.