CVE-2009-5097 in Palm Pre WebOS
Summary
by MITRE
Palm Pre WebOS 1.1 and earlier processes JavaScript in email messages, which allows remote attackers to execute arbitrary JavaScript, as demonstrated by reading PalmDatabase.db3.
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Analysis
by VulDB Data Team • 01/16/2018
The vulnerability identified as CVE-2009-5097 represents a critical security flaw in Palm Pre WebOS versions 1.1 and earlier that fundamentally undermines the device's email security architecture. This vulnerability stems from the operating system's improper handling of JavaScript content within email messages, creating a dangerous execution environment where malicious code can be seamlessly interpreted and executed without user awareness. The flaw operates at the application layer of the device's security model, specifically targeting the email client's parsing mechanisms that fail to adequately sanitize or isolate JavaScript code embedded within message content.
The technical implementation of this vulnerability demonstrates a classic cross-site scripting attack vector that has been adapted for mobile email environments. When a user receives an email containing malicious JavaScript, the Palm Pre WebOS email client processes this content without proper security boundaries, allowing the script to execute within the device's web environment. This execution context provides attackers with direct access to sensitive local data stores, as evidenced by the specific demonstration involving the PalmDatabase.db3 file. The vulnerability essentially creates a sandbox escape condition where JavaScript execution bypasses normal security restrictions and gains access to the device's local database files that contain user information, contacts, and other sensitive data.
The operational impact of this vulnerability extends far beyond simple code execution, as it fundamentally compromises the device's data integrity and user privacy. Attackers can leverage this vulnerability to perform unauthorized data access, potentially stealing personal information, device credentials, and other sensitive user data stored in the PalmDatabase.db3 file. The remote execution capability means that attackers do not need physical access to the device or network proximity to exploit the vulnerability, making it particularly dangerous in mobile environments where users frequently receive emails from untrusted sources. This vulnerability effectively neutralizes the device's built-in email security measures and creates persistent access points for data exfiltration and further exploitation.
This vulnerability maps directly to CWE-79, which describes Cross-Site Scripting (XSS) flaws, and aligns with several ATT&CK techniques including T1059.007 for Command and Scripting Interpreter and T1566 for Phishing. The attack surface is particularly concerning given the mobile device context where users may not be aware of the security implications of email content, and the vulnerability demonstrates a lack of proper input validation and output encoding in the email processing pipeline. Organizations and individuals using Palm Pre devices with affected WebOS versions face significant risk of data compromise, with potential for identity theft, financial fraud, and corporate data breaches. The vulnerability also highlights the importance of secure email processing in mobile environments and the need for comprehensive sandboxing mechanisms to prevent code execution from untrusted sources.
Mitigation strategies for this vulnerability require immediate system updates and patches from Palm, as well as user education about email security practices. Users should avoid opening suspicious emails and disable JavaScript execution in email clients where possible. Network administrators should implement email filtering solutions that can detect and block malicious JavaScript content. The vulnerability underscores the critical importance of proper security architecture in mobile operating systems and highlights the need for robust input sanitization, output encoding, and privilege separation mechanisms. Security professionals should consider this vulnerability as a prime example of why mobile device management and secure coding practices are essential components of enterprise security strategies.