CVE-2024-3194 in MailCleaner
Summary
by MITRE • 04/29/2024
A vulnerability was found in MailCleaner up to 2023.03.14 and classified as problematic. Affected by this issue is some unknown functionality of the component Log File Endpoint. The manipulation leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. VDB-262310 is the identifier assigned to this vulnerability.
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Analysis
by VulDB Data Team • 04/03/2025
The vulnerability identified as CVE-2024-3194 affects MailCleaner software version 2023.03.14 and earlier, representing a significant security flaw within the application's logging infrastructure. This cross-site scripting vulnerability specifically targets the Log File Endpoint component, which serves as a critical interface for accessing system logs and monitoring activities. The flaw exists in the way the application processes and displays log file data, creating an avenue for malicious actors to inject harmful scripts into the system's user interface.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the Log File Endpoint functionality. When users access log files through the web interface, the application fails to properly sanitize user-supplied data before rendering it in the browser context. This omission creates a classic cross-site scripting scenario where attacker-controlled input can be executed as script code within the victim's browser session, potentially compromising user authentication tokens and sensitive system information.
The operational impact of this vulnerability extends beyond simple data exposure, as it enables remote code execution capabilities through browser-based attacks. An attacker can leverage this flaw to perform session hijacking, steal administrative credentials, or redirect users to malicious websites that exploit additional vulnerabilities. The public disclosure of this exploit means that threat actors can readily implement attacks against unpatched MailCleaner installations, particularly those deployed in enterprise environments where email security systems are critical infrastructure components.
Security practitioners should recognize this vulnerability as a direct manifestation of CWE-79, which describes cross-site scripting flaws in web applications, and aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments. The remote attack vector eliminates the need for physical access or network-level privileges, making this vulnerability particularly dangerous in multi-tenant email security deployments. Organizations using MailCleaner software must prioritize immediate patch deployment and implement additional network segmentation measures to limit potential lateral movement if exploitation occurs.
The recommended mitigation strategy involves applying the vendor-provided patch to upgrade to MailCleaner version 2023.03.15 or later, which includes proper input sanitization and output encoding controls. Additionally, implementing web application firewalls with XSS detection capabilities and conducting regular security assessments of the logging infrastructure can provide defense-in-depth protection. Network monitoring should be enhanced to detect suspicious log file access patterns and potential exploitation attempts, while user education regarding suspicious email content remains crucial for preventing successful social engineering attacks that may accompany XSS exploitation attempts.