CVE-2002-1952 in phpRank
Summary
by MITRE
phpRank 1.8 does not properly check the return codes for MySQL operations when authenticating users, which could allow remote attackers to authenticate using a NULL password when database errors occur or if the database is unavailable.
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Analysis
by VulDB Data Team • 07/06/2024
The vulnerability identified as CVE-2002-1952 affects phpRank 1.8, a web-based ranking system that relies on MySQL database operations for user authentication. This flaw represents a critical security weakness in the authentication mechanism that could be exploited by remote attackers to gain unauthorized access to the system. The vulnerability stems from improper error handling within the authentication process, specifically in how the application manages MySQL operation return codes during user verification.
The technical implementation of this vulnerability occurs when phpRank 1.8 attempts to authenticate users against a MySQL database. During the authentication process, the application executes MySQL queries to verify user credentials but fails to properly validate the return codes from these database operations. When database errors occur or when the database becomes temporarily unavailable, the application does not handle these failure conditions appropriately, allowing authentication to proceed with invalid credentials. This behavior creates a scenario where attackers can bypass authentication by leveraging database connectivity issues or errors that cause the system to accept NULL password attempts.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it fundamentally undermines the security model of the phpRank application. An attacker exploiting this vulnerability can gain administrative or user-level access to the system without providing valid credentials, potentially leading to complete system compromise. The vulnerability is particularly dangerous because it operates silently and can be difficult to detect, as the authentication failure occurs during database operations rather than through explicit error messages. This weakness aligns with CWE-254, which addresses security weaknesses related to improper error handling and inadequate validation of return codes in system operations.
The exploitation of this vulnerability follows a pattern consistent with attack techniques described in the MITRE ATT&CK framework, particularly those related to credential access and privilege escalation. Attackers can leverage this flaw by either creating database connectivity issues or by targeting systems where database errors are more likely to occur. The vulnerability demonstrates poor defensive programming practices and highlights the importance of implementing robust error handling mechanisms in authentication systems. Security professionals should note that this vulnerability represents a classic example of how database error handling can create security gaps in web applications, where the system's response to failure conditions inadvertently creates attack vectors.
Mitigation strategies for this vulnerability require immediate attention from system administrators and developers. The most effective approach involves implementing proper error handling for all database operations within the authentication process, ensuring that failed database operations result in explicit authentication failures rather than allowing the system to proceed with incomplete or invalid credentials. Updates to phpRank 1.8 to versions that address this specific vulnerability should be prioritized, as the original implementation contains fundamental flaws in its database interaction logic. Additionally, implementing database connection monitoring and error logging can help detect when these conditions occur, while network-level security controls can help prevent exploitation attempts by monitoring for unusual authentication patterns. Organizations should also consider implementing additional authentication layers and access controls to reduce the impact of potential exploitation.