CVE-2008-1381 in ZoneMinder
Summary
by MITRE
ZoneMinder before 1.23.3 allows remote authenticated users, and possibly unauthenticated attackers in some installations, to execute arbitrary commands via shell metacharacters in a crafted URL.
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Analysis
by VulDB Data Team • 08/10/2019
The vulnerability identified as CVE-2008-1381 affects ZoneMinder versions prior to 1.23.3 and represents a critical command injection flaw that can be exploited by both authenticated and potentially unauthenticated attackers. This vulnerability resides within the web interface component of ZoneMinder, a popular open-source video surveillance software that manages security camera feeds and recording operations. The flaw manifests when the application fails to properly sanitize user input before processing it within shell commands, creating an environment where malicious actors can inject arbitrary commands through crafted URLs.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within ZoneMinder's web interface. When users interact with the application through web browsers, certain parameters in URLs are directly passed to underlying shell commands without proper escaping or filtering of special metacharacters such as semicolons, ampersands, or backticks. This allows attackers to append malicious shell commands that get executed with the privileges of the web server process, typically running as a system user with significant access to the underlying operating system. The vulnerability is categorized under CWE-78 as "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", which is a well-documented weakness in software security practices.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with arbitrary code execution capabilities on the affected system. An attacker could potentially gain complete control over the surveillance server, including access to all recorded video feeds, configuration settings, and network resources. The vulnerability can be exploited remotely, making it particularly dangerous as it does not require physical access or local network presence. In some configurations where ZoneMinder is deployed with insufficient network segmentation or access controls, unauthenticated attackers might also exploit this vulnerability, expanding the attack surface significantly. This aligns with the ATT&CK framework's technique T1059.001 for Command and Scripting Interpreter, specifically focusing on the execution of commands through web interfaces and shell injection methods.
Mitigation strategies for this vulnerability primarily involve upgrading to ZoneMinder version 1.23.3 or later, which includes proper input sanitization and validation mechanisms. Organizations should implement comprehensive patch management processes to ensure all systems running ZoneMinder are updated promptly. Additional defensive measures include restricting network access to the ZoneMinder web interface through firewalls, implementing web application firewalls to detect and block malicious URL patterns, and configuring the application to run with minimal required privileges. Network segmentation should be employed to isolate the surveillance systems from critical infrastructure, and regular security audits should be conducted to identify potential injection points in web applications. The vulnerability also underscores the importance of following secure coding practices such as input validation, output encoding, and principle of least privilege in all web application development to prevent similar issues from occurring in the future.