CVE-2005-1652 in PostMaster
Summary
by MITRE
message.htm for Woppoware PostMaster 4.2.2 (build 3.2.5) allows remote attackers to bypass authentication by modifying the email parameter.
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Analysis
by VulDB Data Team • 06/02/2019
The vulnerability identified as CVE-2005-1652 resides within the Woppoware PostMaster 4.2.2 email server software, specifically affecting the message.htm component. This issue represents a critical authentication bypass flaw that allows remote attackers to gain unauthorized access to the system by manipulating a single parameter within the email handling mechanism. The vulnerability stems from inadequate input validation and improper authentication checks within the web interface, creating a pathway for malicious actors to circumvent the security controls that should protect the email server's administrative functions.
The technical exploitation of this vulnerability occurs through manipulation of the email parameter within the message.htm script, which is part of the PostMaster web administration interface. When an attacker modifies this parameter, the system fails to properly validate the input or verify the user's authentication status before granting access to restricted administrative functions. This flaw falls under the category of improper input validation and authentication bypass, with direct implications for the system's integrity and confidentiality. The vulnerability operates at the application layer, specifically targeting the web-based administrative interface that manages email server configurations and user accounts.
From an operational perspective, this authentication bypass vulnerability presents significant risks to organizations utilizing Woppoware PostMaster 4.2.2. Attackers who successfully exploit this flaw can access sensitive email server configurations, modify user accounts, view confidential email communications, and potentially escalate their privileges to full administrative control. The remote nature of the attack means that threat actors do not require physical access to the system or local network presence to exploit this vulnerability, making it particularly dangerous in environments where the web interface is exposed to the internet. This vulnerability directly impacts the CIA triad by compromising both confidentiality and integrity of the email infrastructure.
The security implications extend beyond simple unauthorized access, as this vulnerability enables attackers to potentially establish persistent access points within the email infrastructure. Organizations may face data breaches, email spoofing, and unauthorized modification of email routing rules that could facilitate further attacks. The vulnerability's classification aligns with CWE-285, which addresses improper authorization issues in authentication mechanisms, and relates to ATT&CK technique T1078 for valid accounts and T1566 for phishing attacks that could leverage this authentication bypass for broader compromise. Network administrators should consider implementing network segmentation to limit exposure of administrative interfaces and deploy intrusion detection systems to monitor for exploitation attempts.
Mitigation strategies for this vulnerability should include immediate application of vendor patches or updates to Woppoware PostMaster to the latest available version that addresses this authentication bypass flaw. Organizations should also implement network access controls to restrict access to the administrative web interface to trusted IP addresses only, and consider disabling the web interface entirely if it is not required for administrative tasks. Additional defensive measures include regular security audits of web applications, implementation of web application firewalls, and monitoring for suspicious parameter modifications in web server logs. The vulnerability demonstrates the critical importance of proper authentication mechanisms and input validation in preventing unauthorized access to sensitive systems, aligning with security best practices outlined in NIST SP 800-53 and ISO 27001 frameworks for secure system design and implementation.