CVE-2006-6284 in Vikingboard
Summary
by MITRE
Directory traversal vulnerability in admin.php in Vikingboard 0.1.2 allows remote authenticated administrators to include arbitrary files via a .. (dot dot) sequence in the act parameter.
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Analysis
by VulDB Data Team • 08/09/2018
The vulnerability identified as CVE-2006-6284 represents a critical directory traversal flaw within the Vikingboard 0.1.2 web application administration interface. This vulnerability specifically affects the admin.php script where improper input validation allows authenticated administrators to manipulate file inclusion mechanisms through crafted directory traversal sequences. The flaw exists in the handling of the act parameter which processes user-supplied input without adequate sanitization or validation, creating a pathway for arbitrary file inclusion attacks.
The technical implementation of this vulnerability stems from the application's failure to properly validate and sanitize user input before using it in file operations. When an authenticated administrator submits a request containing a .. (dot dot) sequence within the act parameter, the application processes this input directly without proper path validation. This allows attackers to traverse the file system hierarchy and potentially include files outside the intended directory structure. The vulnerability is classified as a directory traversal attack pattern that aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory. The weakness occurs at the point where user-controllable input is directly incorporated into file system operations without proper normalization or validation of the path components.
The operational impact of this vulnerability extends beyond simple file access restrictions and represents a significant security risk for systems running Vikingboard 0.1.2. An attacker who has obtained administrative credentials can leverage this flaw to include arbitrary system files, potentially leading to information disclosure, privilege escalation, or even remote code execution depending on the system configuration and file permissions. The vulnerability can be exploited to read sensitive configuration files, database credentials, or system files that should remain protected. From an attacker's perspective, this represents a critical privilege escalation vector that transforms legitimate administrative access into a broader system compromise opportunity. The attack pattern aligns with ATT&CK technique T1059 for command and scripting interpreter and T1566 for credential access through exploitation of vulnerable web applications.
Mitigation strategies for this vulnerability require immediate implementation of input validation and sanitization measures within the application code. The most effective approach involves implementing strict input validation that filters out or normalizes directory traversal sequences before processing user input. The application should normalize all file paths to ensure that .. sequences are properly handled and that file operations remain confined to the intended directory structure. Additionally, implementing proper access controls and privilege separation can limit the potential impact of such vulnerabilities. System administrators should also consider implementing web application firewalls that can detect and block suspicious directory traversal patterns. Regular security audits and code reviews focusing on file handling operations should be conducted to identify similar vulnerabilities in other parts of the application. The remediation process should include updating the application to a newer version that addresses this specific vulnerability, as the original Vikingboard 0.1.2 version is no longer supported and likely contains additional unpatched security flaws. Organizations should also implement monitoring and logging of administrative activities to detect potential exploitation attempts and establish proper incident response procedures for such security events.