CVE-2007-6316 in Barracudadrive Web Server Home Server
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in BarracudaDrive Web Server before 3.8 allows remote attackers to inject arbitrary web script or HTML via the URI path in an HTTP GET request, which is activated by administrators viewing log files via the Trace page.
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Analysis
by VulDB Data Team • 11/10/2017
The vulnerability identified as CVE-2007-6316 represents a classic cross-site scripting flaw in the BarracudaDrive Web Server version 3.7 and earlier. This security weakness resides in the server's handling of URI path parameters within HTTP GET requests, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code. The vulnerability specifically manifests when administrators access log files through the Trace page functionality, making it particularly dangerous as it targets privileged users who maintain system logs. The flaw stems from inadequate input validation and output sanitization mechanisms within the web server's logging interface, allowing attackers to inject malicious payloads that persist in the system's trace logs.
This vulnerability operates under the Common Weakness Enumeration framework as CWE-79, which categorizes it as a Cross-Site Scripting weakness. The attack vector specifically aligns with the ATT&CK technique T1212 - Exploitation for Credential Access, as administrators viewing log files may inadvertently execute malicious scripts that could harvest session cookies or perform unauthorized actions. The technical implementation involves the web server failing to properly sanitize user-supplied URI path data before displaying it in the Trace page context. When administrators navigate to the trace page to review system logs, the maliciously crafted URI paths are rendered without proper HTML escaping or encoding, enabling script execution within the administrator's browser context.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with a potential pathway for privilege escalation and persistent access within the system. Administrators who regularly monitor log files through the Trace page become targets for this attack, as their browsers execute the injected scripts when viewing malicious log entries. This creates a scenario where attackers can establish a foothold that persists across sessions, potentially allowing for continued monitoring of system activities or redirection to malicious sites. The vulnerability's exploitation requires minimal sophistication, as attackers only need to craft a malicious URI path and access the target system through the vulnerable web server. This makes it particularly attractive to threat actors seeking to maintain persistent access without requiring complex attack chains.
Mitigation strategies for CVE-2007-6316 should prioritize immediate patching of the BarracudaDrive Web Server to version 3.8 or later, where the vulnerability has been addressed through proper input validation and output sanitization. Organizations should implement comprehensive input filtering mechanisms that sanitize all URI path parameters before processing or displaying them in web interfaces. The solution involves implementing proper HTML escaping and encoding techniques when rendering user-supplied data in the Trace page functionality, ensuring that any potentially malicious script content is neutralized before presentation. Additionally, organizations should consider implementing web application firewalls to detect and block suspicious URI patterns, and establish regular security audits of web server configurations to prevent similar vulnerabilities from emerging in other components. Network segmentation and privileged access controls should also be reinforced to limit the potential impact if the vulnerability is exploited, while implementing monitoring solutions that can detect anomalous log file access patterns that might indicate exploitation attempts.