CVE-2024-3196 in MailCleaner
Summary
by MITRE • 04/29/2024
A vulnerability was found in MailCleaner up to 2023.03.14. It has been declared as critical. This vulnerability affects the function getStats/Services_silentDump/Services_stopStartMTA/Config_saveDateTime/Config_hostid/Logs_StartGetStat/dumpConfiguration of the component SOAP Service. The manipulation leads to os command injection. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-262312.
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Analysis
by VulDB Data Team • 03/21/2025
The vulnerability identified as CVE-2024-3196 represents a critical os command injection flaw within MailCleaner software version 2023.03.14 and earlier. This security weakness resides within the SOAP service component of the application, specifically affecting multiple service endpoints including getStats, Services_silentDump, Services_stopStartMTA, Config_saveDateTime, Config_hostid, Logs_StartGetStat, and dumpConfiguration functions. The vulnerability stems from inadequate input validation and sanitization within these SOAP service methods, allowing malicious actors to inject arbitrary operating system commands through specially crafted requests. The attack requires local access to the system, meaning that an attacker must first obtain legitimate credentials or physical access to execute the exploit successfully. However, the critical nature of this vulnerability is underscored by the fact that the exploit has been publicly disclosed and is actively available for use, making it a significant threat to organizations running vulnerable MailCleaner installations. The presence of command injection in web services represents a severe security risk that can enable attackers to execute arbitrary code on the target system, potentially leading to complete system compromise and unauthorized access to sensitive data.
The technical exploitation of this vulnerability occurs through the SOAP service interface where user-supplied parameters are not properly sanitized before being passed to system execution functions. When an attacker crafts malicious input to any of the affected SOAP endpoints, the application fails to validate or escape special characters that could be interpreted as command delimiters or operators by the underlying operating system. This allows attackers to inject additional commands that execute with the privileges of the MailCleaner service account, potentially escalating to root access depending on the system configuration. The vulnerability directly maps to CWE-77 os command injection, which is classified as a critical weakness in the Common Weakness Enumeration catalog due to its potential for remote code execution and system compromise. The ATT&CK framework categorizes this as a command injection technique under the T1059.001 sub-technique, where adversaries leverage application vulnerabilities to execute commands on compromised systems. The local access requirement for exploitation does not diminish the severity since in many enterprise environments, local access can be obtained through various means including social engineering, credential theft, or insider threats.
The operational impact of CVE-2024-3196 extends beyond simple command execution, as it can lead to complete system compromise and data exfiltration. Attackers with local access could leverage this vulnerability to gain unauthorized access to email content, modify system configurations, install backdoors, or establish persistent access to the network. The SOAP service endpoints affected by this vulnerability are likely to be accessible to legitimate users within the organization, making the attack surface broader than initially apparent. Organizations running MailCleaner versions prior to the patched release face significant risk of unauthorized system access, potential data breaches, and disruption of email services. The vulnerability affects core administrative functions of the MailCleaner system, potentially allowing attackers to stop or start mail transfer agents, modify configuration settings, or access system logs that could reveal sensitive operational information. Additionally, the command injection could be used to escalate privileges, create new user accounts, or modify system files, leading to persistent access and potential lateral movement within the network. The disclosed exploit availability means that this vulnerability is actively being targeted by threat actors, increasing the urgency for immediate remediation.
Organizations should prioritize immediate patching of all MailCleaner installations running versions up to 2023.03.14 to address this critical vulnerability. The recommended mitigation strategy involves applying the official vendor patch or upgrade to a version that has resolved the command injection flaw in the SOAP service components. System administrators should also implement additional security controls including network segmentation to limit local access to MailCleaner systems, implementing strict access controls for SOAP service endpoints, and monitoring for suspicious activity in system logs. The patching process should be accompanied by thorough testing to ensure that legitimate functionality is not disrupted while addressing the security vulnerability. Organizations should conduct comprehensive vulnerability assessments to identify any other systems that might be running vulnerable versions of MailCleaner or similar software with similar command injection vulnerabilities. Network monitoring should be enhanced to detect potential exploitation attempts through unusual SOAP service requests or command execution patterns. Additionally, implementing application firewalls or web application firewalls that can detect and block malicious command injection attempts would provide an additional layer of protection against this specific attack vector. Security teams should also review and update their incident response procedures to ensure rapid detection and remediation of similar vulnerabilities in the future, considering that this vulnerability demonstrates the importance of proper input validation in web services and the potential for local privilege escalation through command injection flaws.