CVE-2001-1285 in IMail
Summary
by MITRE
Directory traversal vulnerability in readmail.cgi for Ipswitch IMail 7.04 and earlier allows remote attackers to access the mailboxes of other users via a .. (dot dot) in the mbx parameter.
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Analysis
by VulDB Data Team • 09/27/2025
The vulnerability described in CVE-2001-1285 represents a classic directory traversal flaw that affected Ipswitch IMail versions 7.04 and earlier. This security weakness resides within the readmail.cgi script which processes mailbox access requests through the mbx parameter. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file path navigation sequences. Attackers can exploit this weakness by crafting malicious requests containing dot-dot sequences in the mbx parameter, enabling them to traverse the file system directory structure beyond the intended mailbox boundaries. This flaw fundamentally undermines the access controls that should isolate individual user mailboxes within the IMail server environment.
The technical implementation of this vulnerability aligns with CWE-22, which categorizes directory traversal attacks as a critical weakness in input validation. The vulnerability operates by manipulating the mbx parameter to include sequences such as "../" that instruct the web server to navigate up the directory hierarchy. When the readmail.cgi script processes these requests without proper validation, it allows the attacker to access files and directories outside the designated mailbox storage areas. This type of attack leverages the fundamental trust placed in user input by the application, where the server assumes that the provided path parameters are safe and legitimate. The attack vector specifically targets the web interface component of IMail, making it accessible to remote attackers without requiring local system access or authentication to the target server.
The operational impact of this vulnerability is severe and multifaceted within enterprise email environments. Remote attackers can gain unauthorized access to other users' email mailboxes, potentially exposing sensitive communications, personal data, and business confidential information. This breach of privacy and data integrity can lead to significant financial losses, regulatory compliance violations, and reputational damage for organizations relying on IMail for their email infrastructure. The vulnerability's remote exploitability means that attackers can perform these attacks from anywhere on the internet, making it particularly dangerous for organizations with publicly accessible email servers. Additionally, the attack can be automated and scaled across multiple targets, amplifying the potential damage and making it a preferred target for malicious actors.
Organizations should implement several mitigation strategies to address this vulnerability effectively. The most immediate and critical step involves applying the vendor-provided security patches or upgrading to newer versions of Ipswitch IMail that have corrected the directory traversal flaw. System administrators should also implement input validation measures that sanitize all user-provided parameters, particularly those used for file path construction. Network-level protections such as web application firewalls can help detect and block malicious traversal attempts by monitoring for suspicious path sequences. Access controls should be strengthened to ensure that only authorized users can access mailbox data, and regular security audits should verify that no unauthorized access paths exist. The vulnerability also highlights the importance of following secure coding practices and conducting thorough input validation to prevent similar issues in other applications. This incident demonstrates how basic input sanitization can prevent widespread exploitation and emphasizes the need for comprehensive security testing throughout the software development lifecycle. The ATT&CK framework categorizes this vulnerability under privilege escalation and credential access techniques, where adversaries leverage application weaknesses to gain unauthorized access to resources they should not be able to reach. Organizations should also consider implementing monitoring solutions that can detect unusual access patterns or attempts to traverse directory structures, as these activities often precede more significant security incidents.