CVE-2006-5258 in Asbru Website Manager
Summary
by MITRE
The spell checking component of (1) Asbru Web Content Management before 6.1.22, (2) Asbru Web Content Editor before 6.0.22, and (3) Asbru Website Manager before 6.0.22 allows remote attackers to execute arbitrary commands via an unspecified parameter that is not sanitized before Aspell is invoked.
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Analysis
by VulDB Data Team • 04/24/2026
The vulnerability identified as CVE-2006-5258 represents a critical command injection flaw within the spell checking functionality of several Asbru web content management products. This issue affects multiple versions of Asbru Web Content Management, Web Content Editor, and Website Manager, specifically those prior to versions 6.1.22, 6.0.22, and 6.0.22 respectively. The vulnerability stems from inadequate input sanitization within the spell checking component that processes user-supplied data before invoking the Aspell spell checking utility. This flaw creates a direct pathway for remote attackers to execute arbitrary system commands through specially crafted input parameters that bypass proper validation mechanisms. The technical implementation of this vulnerability aligns with CWE-77, which describes improper neutralization of special elements used in a command, and specifically relates to command injection attacks that leverage external command execution capabilities.
The operational impact of this vulnerability extends far beyond simple data compromise, as it provides attackers with potential full system control over affected servers. When users interact with the spell checking feature, malicious input can be passed directly to the Aspell utility without proper sanitization, enabling attackers to inject operating system commands that execute with the privileges of the web application process. This scenario creates a severe risk for organizations relying on these content management systems, as successful exploitation could lead to complete server compromise, data exfiltration, unauthorized access to internal networks, and potential lateral movement within the infrastructure. The vulnerability's remote exploitability means that attackers do not require physical access or prior authentication to the system, making it particularly dangerous in internet-facing environments where these applications are deployed.
Security practitioners should prioritize immediate remediation of this vulnerability through the application of official patches released by Asbru, as the flaw represents a significant risk to web application security. Organizations should also implement network-level mitigations including firewall rules that restrict access to spell checking endpoints, particularly when these features are not essential for business operations. The vulnerability demonstrates the importance of proper input validation and output encoding in web applications, as highlighted by ATT&CK technique T1059.001 for command and scripting interpreter execution. Additional defensive measures include implementing web application firewalls to detect and block suspicious command injection patterns, conducting thorough security testing of all user-input handling components, and establishing comprehensive monitoring for unusual system command execution patterns. Organizations should also consider implementing principle of least privilege for web application accounts and ensuring that spell checking functionality is disabled or properly sanitized when not required for operational needs. The vulnerability serves as a reminder of the critical importance of validating all user inputs and the potential consequences of failing to properly sanitize data before passing it to system utilities or external processes.