CVE-2007-3272 in MiniBB
Summary
by MITRE
Directory traversal vulnerability in index.php in MiniBB 2.0.5 allows remote attackers to read arbitrary files via a .. (dot dot) in the language parameter in a register action.
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Analysis
by VulDB Data Team • 09/22/2024
The vulnerability identified as CVE-2007-3272 represents a critical directory traversal flaw within the MiniBB 2.0.5 bulletin board software, specifically affecting the index.php script during user registration processes. This security weakness enables remote attackers to access arbitrary files on the server by manipulating the language parameter through a .. (dot dot) sequence, effectively bypassing normal file access controls and potentially exposing sensitive system information. The vulnerability resides in the application's improper input validation mechanisms that fail to sanitize user-supplied data before using it in file system operations.
The technical exploitation of this vulnerability occurs when the MiniBB application processes user registration requests and incorporates the language parameter directly into file path constructions without adequate sanitization or validation. When an attacker submits a malicious language parameter containing directory traversal sequences such as ../../../etc/passwd, the application fails to properly validate or filter these inputs, allowing the traversal to occur. This flaw directly maps to CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal vulnerabilities. The vulnerability exists because the software does not implement proper input validation or canonicalization of file paths, enabling attackers to navigate beyond the intended directory boundaries.
The operational impact of this vulnerability extends beyond simple file reading capabilities, as it can potentially lead to complete system compromise and unauthorized access to sensitive data. Attackers could leverage this vulnerability to access configuration files, database credentials, user authentication details, and other critical system information that might be stored in accessible locations. The remote nature of this attack means that adversaries do not require physical access to the system and can exploit the vulnerability from anywhere on the internet, making it particularly dangerous for web applications hosting sensitive information. This type of vulnerability can be categorized under the ATT&CK technique T1083, which involves discovering system information through directory listing and file access methods, potentially leading to further exploitation opportunities.
Mitigation strategies for CVE-2007-3272 should focus on implementing proper input validation and sanitization measures to prevent directory traversal attacks. Organizations should immediately upgrade to a patched version of MiniBB or apply the relevant security patches provided by the vendor to address this vulnerability. Additionally, implementing proper parameter validation that filters out special characters such as dots and forward slashes from user inputs during registration processes would prevent exploitation. Network-level defenses including web application firewalls and intrusion prevention systems can also provide additional protection by detecting and blocking suspicious directory traversal patterns in HTTP requests. The implementation of least privilege principles and proper file system access controls can limit the damage that could occur even if the vulnerability is exploited. Security monitoring and logging of file access patterns should be enhanced to detect potential exploitation attempts and provide forensic evidence for incident response activities.