CVE-2002-1880 in LokwaBB
Summary
by MITRE
LokwaBB 1.2.2 allows remote attackers to read arbitrary messages by modifying the pmid parameter to pm.php.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 06/10/2018
The vulnerability identified as CVE-2002-1880 affects LokwaBB version 1.2.2, a web-based bulletin board system that was prevalent in the early 2000s. This security flaw represents a classic example of insufficient input validation and improper access control mechanisms within web applications. The vulnerability specifically resides in the pm.php script which handles private messaging functionality within the bulletin board system. The flaw allows malicious actors to exploit a parameter manipulation technique by altering the pmid parameter, which controls the identification of private messages. This type of vulnerability falls under the category of insecure direct object references as defined by CWE-639, where the application fails to properly validate user access to objects or resources. The vulnerability demonstrates a fundamental weakness in the application's authorization logic, where the system does not adequately verify whether the authenticated user has legitimate access rights to view specific private messages.
The technical implementation of this vulnerability exploits the lack of proper access control checks within the pm.php script. When a user attempts to view a private message, the system relies on the pmid parameter to determine which message to display. However, the application does not validate whether the requesting user is authorized to access the specified message ID. This creates an opportunity for attackers to manipulate the parameter value to access private messages that belong to other users. The flaw essentially allows for unauthorized information disclosure through direct object reference manipulation, where an attacker can iterate through message IDs to discover and read messages they should not have access to. This vulnerability type is particularly dangerous because it can lead to privacy violations and exposure of sensitive communications between users. The issue represents a direct violation of the principle of least privilege, where users should only be able to access resources they are explicitly authorized to view.
The operational impact of this vulnerability extends beyond simple privacy concerns to encompass potential security breaches and data exposure incidents. Attackers could potentially gain access to private communications, personal information, or sensitive discussions that users intended to keep confidential within the bulletin board system. This type of vulnerability can significantly damage user trust in the platform and may lead to legal and regulatory consequences, particularly if the exposed information contains personal data or confidential communications. The vulnerability affects the confidentiality aspect of the CIA triad, as it allows unauthorized disclosure of private information. From an attacker's perspective, this represents a low-effort, high-impact method for gaining access to sensitive user data. The vulnerability also aligns with ATT&CK technique T1213.002 for Credential Access and Data Transfer Methods, as it enables unauthorized access to private communications and user data. Organizations using affected versions of LokwaBB would be vulnerable to information disclosure attacks that could compromise user privacy and potentially expose sensitive data.
Mitigation strategies for this vulnerability should focus on implementing proper access control mechanisms and input validation procedures. The most effective remediation involves adding comprehensive authorization checks within the pm.php script to verify that users can only access private messages that are specifically intended for them. This requires implementing proper session management and user authentication verification before displaying any private message content. The application should validate that the message ID corresponds to a message that actually belongs to the authenticated user, rather than simply accepting the parameter value at face value. Additionally, developers should implement proper input sanitization and parameter validation to prevent manipulation of critical parameters. Organizations should also consider implementing logging mechanisms to detect and alert on suspicious parameter manipulation attempts. The fix should include proper error handling that prevents information leakage through error messages and ensures that unauthorized access attempts are properly rejected. This vulnerability underscores the critical importance of secure coding practices and the need for regular security assessments of web applications, particularly those handling user communications and private data. The remediation process should include thorough code review and security testing to ensure that similar authorization flaws do not exist in other parts of the application.