CVE-2005-2227 in wmailserver
Summary
by MITRE
softiacom wmailserver 1.0 stores passwords in plaintext in the darsite\mailsrv\admin key which allows local users to gain administrator privileges.
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Analysis
by VulDB Data Team • 07/10/2018
The vulnerability identified as CVE-2005-2227 affects the softiacom wmailserver version 1.0, specifically targeting the configuration storage mechanism within the Windows registry. This flaw represents a critical security weakness that directly undermines the integrity of the mail server's authentication system by storing administrative credentials in an unencrypted format. The vulnerability resides in the darsite\mailsrvdmin registry key where password information is maintained in plaintext, creating an exploitable condition that can be leveraged by local attackers to escalate their privileges within the system.
The technical implementation of this vulnerability stems from poor cryptographic practices and inadequate security controls within the mail server's configuration management. When administrative credentials are stored in plaintext format within the Windows registry, any local user with sufficient privileges to access the registry can directly read these values without requiring additional authentication mechanisms. This design flaw aligns with CWE-312, which specifically addresses the exposure of sensitive information through improper handling of data in memory or storage. The vulnerability demonstrates a fundamental failure in secure credential management practices, where sensitive authentication data should never be stored in an easily accessible and unencrypted format.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass broader security implications for the entire mail server infrastructure. Local users who can access the registry entries can immediately gain administrative access to the mail server, potentially allowing them to modify email configurations, access sensitive email communications, manipulate user accounts, and compromise the confidentiality and integrity of the entire email system. This vulnerability effectively nullifies the security boundaries that should exist between different user roles within the system, creating a scenario where any local user can assume the highest level of administrative privileges.
From an adversarial perspective, this vulnerability provides an ideal attack vector for both internal and external threat actors who may have gained initial access to a system through other means. The attack follows the ATT&CK framework pattern for privilege escalation, specifically targeting the 'Modify Registry' and 'Access Token Manipulation' techniques to achieve administrative control. The low complexity and high impact nature of this vulnerability makes it particularly attractive to attackers, as it requires minimal effort to exploit while providing maximum access to the compromised system. Organizations running this mail server version face significant risk of unauthorized access and potential data breaches.
Mitigation strategies for this vulnerability should focus on immediate remediation through software updates and configuration changes. The primary solution involves upgrading to a patched version of the softiacom wmailserver that properly encrypts stored credentials or implements secure credential storage mechanisms. System administrators should also implement registry access controls to limit which users can read the sensitive registry entries, though this represents a secondary defense since the core issue remains in the plaintext storage approach. Additionally, organizations should conduct comprehensive security audits to identify other instances of plaintext credential storage within their infrastructure and implement proper cryptographic practices for all sensitive data storage. The vulnerability serves as a reminder of the critical importance of following security best practices in credential management and the necessity of avoiding hardcoded or plaintext storage of authentication information in any system component.