CVE-2000-0448 in WebShield SMTP
Summary
by MITRE
The WebShield SMTP Management Tool version 4.5.44 does not properly restrict access to the management port when an IP address does not resolve to a hostname, which allows remote attackers to access the configuration via the GET_CONFIG command.
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Analysis
by VulDB Data Team • 10/14/2025
The vulnerability identified as CVE-2000-0448 resides within the WebShield SMTP Management Tool version 4.5.44, representing a critical access control flaw that undermines the security posture of email server configurations. This issue specifically manifests when the system fails to properly validate IP address resolution to hostnames, creating an unintended pathway for unauthorized remote access to sensitive administrative functions.
The technical flaw stems from improper input validation mechanisms within the management port access controls. When an IP address cannot be resolved to a hostname through DNS lookup, the system fails to enforce proper authentication checks, allowing attackers to bypass normal access restrictions. This vulnerability specifically enables exploitation through the GET_CONFIG command, which should normally require authenticated administrative privileges to execute successfully. The flaw operates at the network layer where hostname resolution is expected to provide an additional security check, but when this resolution fails, the system defaults to a permissive access model.
Operationally, this vulnerability presents a severe risk to organizations relying on WebShield SMTP Management Tool for email server administration. Remote attackers can exploit this weakness to retrieve complete server configuration data, potentially exposing sensitive information including user credentials, server settings, network topology details, and other administrative parameters. The impact extends beyond simple information disclosure as attackers could use the retrieved configuration data to plan more sophisticated attacks or to identify additional vulnerabilities within the email infrastructure. The vulnerability affects systems where DNS resolution is not properly enforced or where IP address validation is insufficiently implemented.
Mitigation strategies should focus on implementing proper access control enforcement regardless of DNS resolution status, ensuring that all management port communications require valid authentication credentials before executing privileged commands. Organizations should consider patching to newer versions of the WebShield software where this vulnerability has been addressed, implementing network segmentation to isolate management interfaces, and deploying additional monitoring controls to detect unauthorized access attempts. The vulnerability aligns with CWE-284, which addresses improper access control, and maps to ATT&CK technique T1078 for valid accounts and T1046 for network service scanning, highlighting the need for comprehensive security controls that address both authentication and access validation mechanisms.