CVE-2008-5991 in MailWatch
Summary
by MITRE
Directory traversal vulnerability in docs.php in MailWatch for MailScanner 1.0.4 and earlier allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the doc parameter.
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Analysis
by VulDB Data Team • 11/04/2024
The vulnerability identified as CVE-2008-5991 represents a critical directory traversal flaw within the MailWatch for MailScanner 1.0.4 software ecosystem. This security weakness resides in the docs.php component of the application, which fails to properly validate user-supplied input parameters. The vulnerability specifically affects versions up to and including 1.0.4, making it a significant concern for organizations that have not yet upgraded their MailWatch installations. The flaw manifests when the application processes the doc parameter without adequate sanitization, creating an avenue for malicious actors to manipulate file inclusion mechanisms.
The technical exploitation of this vulnerability occurs through the manipulation of the doc parameter using directory traversal sequences such as .. (dot dot) notation. When an attacker crafts a malicious request containing these traversal sequences, the application processes them without proper validation, allowing the system to interpret these sequences as legitimate file paths. This misconfiguration enables attackers to navigate beyond the intended document directory and access arbitrary local files on the server. The vulnerability falls under the category of CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. This weakness directly enables unauthorized access to sensitive system files, configuration data, and potentially executable code that should remain protected from remote access.
The operational impact of this vulnerability extends beyond simple file disclosure, as it provides attackers with the capability to execute arbitrary local files on the target system. This execution capability transforms what might initially appear as a file inclusion vulnerability into a full remote code execution threat. Attackers can leverage this vulnerability to gain unauthorized access to the system, potentially leading to complete compromise of the mail server infrastructure. The implications are particularly severe in email server environments where MailWatch is deployed, as these systems often contain sensitive information about email traffic, user data, and system configurations. The vulnerability also aligns with ATT&CK technique T1059, which describes the use of command and scripting interpreter for execution, as attackers can potentially execute commands through the included files.
Organizations affected by this vulnerability should prioritize immediate remediation through the upgrade to MailWatch versions that address this issue, specifically targeting releases beyond 1.0.4. The mitigation strategy should also include implementing proper input validation and sanitization mechanisms at the application level to prevent the processing of malicious path traversal sequences. Network-level defenses such as web application firewalls can provide additional protection by filtering out suspicious traversal patterns in incoming requests. Security administrators should also conduct thorough audits of their MailWatch installations to ensure no other similar vulnerabilities exist within the application or its dependencies. The vulnerability demonstrates the critical importance of proper input validation in web applications and serves as a reminder of the potential consequences when such validation is omitted or insufficiently implemented in security-sensitive components.