CVE-2002-1022 in BadBlue
Summary
by MITRE
BadBlue server stores passwords in plaintext in the ext.ini file, which could allow local and possibly remote attackers to gain privileges.
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Analysis
by VulDB Data Team • 09/10/2025
The CVE-2002-1022 vulnerability represents a critical security flaw in the BadBlue web server software that fundamentally compromises authentication mechanisms through improper credential storage practices. This vulnerability resides in the server's configuration file management system where passwords are stored in plain text format rather than being properly encrypted or hashed. The ext.ini file serves as the primary configuration repository for BadBlue server settings, including user authentication credentials that are essential for maintaining system security boundaries.
The technical implementation of this vulnerability stems from the server's failure to apply proper cryptographic measures when storing user credentials. When administrators configure user accounts within BadBlue, the system writes the actual password values directly to the ext.ini file without any form of encryption or obfuscation. This design flaw creates a fundamental weakness in the authentication architecture, as any entity with access to the file system can immediately read and extract these plaintext passwords. The vulnerability manifests as a direct compromise of the principle of least privilege, where authentication information is exposed through simple file access rather than requiring additional authentication steps or cryptographic verification.
The operational impact of this vulnerability extends beyond simple credential exposure to encompass broader privilege escalation capabilities that can be exploited by both local and remote attackers. Local attackers with file system access can directly read the ext.ini file and extract user credentials to gain unauthorized access to the server. Remote attackers may potentially exploit this weakness through various attack vectors including web-based file inclusion vulnerabilities, misconfigured server permissions, or by leveraging other vulnerabilities in the BadBlue server to gain access to the configuration files. The plaintext storage of passwords creates an immediate and complete compromise of user accounts, as attackers can directly utilize these credentials for administrative access or to impersonate legitimate users within the system.
This vulnerability aligns with multiple cybersecurity standards and frameworks including CWE-312, which specifically addresses the exposure of sensitive information through the use of plaintext storage of passwords, and CWE-522, which covers insufficiently protected credentials. From an attacker methodology perspective, this vulnerability maps directly to ATT&CK technique T1078 which describes valid accounts as a means of gaining access to systems, and T1566 which covers credential harvesting through various attack vectors including file system access. The vulnerability also represents a violation of security best practices outlined in NIST SP 800-63B for identity and access management, which requires that credentials be stored using strong cryptographic measures.
The mitigation strategies for CVE-2002-1022 require immediate administrative intervention to address the core configuration flaw. System administrators must first secure the ext.ini file through proper file system permissions, ensuring that only authorized administrative processes can access the configuration file. Additionally, the server should be updated to a version that implements proper password encryption or hashing mechanisms for credential storage. Organizations should implement regular security audits to verify that no plaintext credentials exist in configuration files and should establish automated monitoring for unauthorized file access attempts. The long-term solution involves migrating to more secure web server implementations that properly handle credential storage through industry-standard encryption methods and secure configuration management practices that prevent the exposure of authentication information through simple file system access.