CVE-2004-0612 in ZoneAlarm
Summary
by MITRE
The Mobile Code filter in ZoneAlarm Pro 5.0.590.015 does not filter mobile code within an SSL encrypted session, which could allow remote attackers to bypass the mobile code filtering. NOTE: it has been disputed by the vendor that this behavior is required by the SSL specification.
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Analysis
by VulDB Data Team • 06/22/2018
The vulnerability identified as CVE-2004-0612 represents a significant security flaw in ZoneAlarm Pro version 5.0.590.015's mobile code filtering mechanism. This issue specifically targets the software's handling of mobile code within Secure Sockets Layer encrypted sessions, creating a potential bypass mechanism that could allow malicious actors to circumvent intended security protections. Mobile code refers to executable content that can be downloaded and executed by a user's system, typically including applets, scripts, and other dynamically loaded components that pose inherent security risks. The flaw manifests when the security software fails to properly inspect or filter mobile code that is transmitted through encrypted SSL channels, effectively creating a blind spot in the protection framework.
The technical implementation of this vulnerability stems from the software's failure to maintain consistent security policies across different communication protocols and encryption states. ZoneAlarm Pro's mobile code filter operates under the assumption that all code execution occurs in an unencrypted context, but when code is transmitted through SSL encrypted sessions, the filtering mechanism becomes ineffective. This represents a fundamental flaw in the software's architecture where the security boundary is not properly maintained across different network states. The vulnerability specifically affects the application's ability to perform deep inspection of content within SSL sessions, which is a critical security function that should remain consistent regardless of encryption status.
The operational impact of this vulnerability extends beyond simple bypass capabilities, as it fundamentally undermines the trust model that users place in their security software. When an attacker can successfully transmit malicious mobile code through an encrypted channel, they effectively neutralize a key security control that users expect to be active. This creates a dangerous situation where legitimate security protections are rendered ineffective during encrypted communications, which are increasingly common in modern network environments. The vulnerability essentially creates a tunnel through which malicious code can traverse without proper inspection, potentially leading to complete system compromise if the mobile code contains exploit payloads or backdoor functionality.
The security implications of this vulnerability align with CWE-295, which addresses improper certificate validation, and can be mapped to ATT&CK technique T1059.007 for execution through mobile code. Organizations using this version of ZoneAlarm Pro would be at risk of advanced persistent threats that leverage encrypted channels to avoid detection, as the security software fails to maintain consistent protection policies. The vendor's disputed position regarding SSL specification requirements highlights the complexity of balancing security implementation with protocol compliance, but does not excuse the failure to provide adequate protection. This vulnerability demonstrates how security software implementations can create false security assumptions that leave systems exposed to sophisticated attack vectors.
Mitigation strategies should include immediate patching to the latest version of ZoneAlarm Pro, implementation of additional network monitoring to detect anomalous encrypted traffic patterns, and deployment of alternative security controls that do not rely on the vulnerable filtering mechanism. Organizations should also consider implementing network segmentation and additional content inspection solutions that can operate independently of the affected software. The vulnerability underscores the importance of comprehensive security testing across all network states and encryption levels, as well as the necessity of maintaining consistent security policies regardless of communication protocol or encryption status.