CVE-2003-1078 in Solaris
Summary
by MITRE
The FTP client for Solaris 2.6, 7, and 8 with the debug (-d) flag enabled displays the user password on the screen during login.
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Analysis
by VulDB Data Team • 12/13/2016
The vulnerability described in CVE-2003-1078 represents a critical security flaw in the Solaris operating system's FTP client implementation across versions 2.6, 7, and 8. This issue manifests when the debug flag is enabled, creating an unintended exposure of sensitive authentication credentials during the login process. The flaw falls under the category of information disclosure vulnerabilities, specifically CWE-200, where sensitive data is inadvertently revealed to unauthorized parties through improper error handling or debugging mechanisms. The vulnerability is particularly concerning because it directly compromises the confidentiality of user authentication information, which is fundamental to system security.
The technical implementation of this vulnerability stems from the FTP client's handling of debug output when the -d flag is activated. During the authentication phase of an FTP connection, the client processes user credentials including usernames and passwords. When debug mode is enabled, the system logs verbose information about the connection process including the password in plain text format. This occurs because the debug functionality does not properly sanitize or filter authentication data before displaying it on the screen. The vulnerability is classified as a CWE-200 information exposure issue, where sensitive data is disclosed through improper output handling. The flaw demonstrates poor input validation and output sanitization practices that violate fundamental security principles.
The operational impact of this vulnerability extends beyond simple credential exposure, creating potential attack vectors that align with several ATT&CK techniques including T1078 Valid Accounts and T1566 Phishing. An attacker who gains access to a system with debug mode enabled could easily capture passwords from screen output, potentially escalating privileges or gaining unauthorized access to additional systems. The vulnerability affects systems that are not properly secured or monitored, as the debug flag might be enabled by default or through misconfiguration. This issue represents a significant risk to enterprise environments where Solaris systems are deployed, particularly in scenarios where system administrators might use debug functionality for troubleshooting without considering the security implications.
Mitigation strategies for CVE-2003-1078 should focus on immediate operational controls and long-term system hardening measures. Organizations should disable debug mode on production systems and implement strict access controls for system administrators who require debugging capabilities. The solution involves ensuring that debug flags are only enabled in controlled environments with proper monitoring and that all system administrators are trained on the security implications of using debug functionality. Additionally, implementing proper logging controls and screen capture prevention measures can help prevent unauthorized access to sensitive information displayed during debugging operations. System administrators should also consider upgrading to newer Solaris versions where this vulnerability has been addressed through improved credential handling and output sanitization mechanisms. The remediation process should include comprehensive security audits to identify systems with debug mode enabled and ensure that all system configurations follow security best practices.