CVE-2023-44827 in Community Edition
Summary
by MITRE • 10/25/2023
An issue in ZenTao Community Edition v.18.6 and before, ZenTao Biz v.8.6 and before, ZenTao Max v.4.7 and before allows an attacker to execute arbitrary code via a crafted script to the Office Conversion Settings function.
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Analysis
by VulDB Data Team • 02/09/2026
The vulnerability CVE-2023-44827 represents a critical arbitrary code execution flaw within the ZenTao project management software suite, affecting multiple editions including Community, Biz, and Max versions up to their respective specified releases. This vulnerability resides within the Office Conversion Settings function, which serves as a legitimate interface for processing document conversions but has been improperly secured to handle user-supplied input. The flaw stems from insufficient validation and sanitization of script parameters passed to this conversion mechanism, creating a pathway for malicious actors to inject and execute arbitrary code on affected systems. The vulnerability directly maps to CWE-94, which defines weaknesses in the execution of code that allows attackers to execute arbitrary commands or code, and aligns with ATT&CK technique T1059.007 for command and scripting interpreter. The affected software versions demonstrate a classic insecure deserialization or command injection vulnerability where crafted input can bypass normal security controls.
The technical exploitation of this vulnerability occurs when an attacker submits a malicious script through the Office Conversion Settings function, which then gets processed without proper input validation or sanitization. The system accepts the crafted script and executes it within the context of the web application, potentially with elevated privileges depending on the server configuration and execution environment. This type of vulnerability enables attackers to perform a wide range of malicious activities including but not limited to data exfiltration, system compromise, privilege escalation, and persistence mechanisms. The attack vector leverages the legitimate document conversion functionality as a cover for code execution, making it particularly dangerous as it can bypass traditional security monitoring tools that might not flag normal conversion operations. The vulnerability's impact is amplified by the fact that it affects multiple editions of the software, suggesting a widespread exposure across different deployment scenarios.
The operational impact of CVE-2023-44827 extends beyond immediate code execution capabilities to encompass complete system compromise and data breach potential. Organizations utilizing affected ZenTao versions face significant risk of unauthorized access to project management data, user credentials, and sensitive business information stored within the system. The vulnerability can be exploited remotely without authentication requirements, making it particularly attractive to threat actors seeking to compromise multiple systems simultaneously. Attackers can leverage this flaw to establish persistent access, deploy additional malware, or conduct further reconnaissance within the network. The vulnerability also poses risks to business continuity as compromised systems may experience service disruption, data corruption, or unauthorized modifications to project timelines and deliverables. Organizations may face regulatory compliance issues if sensitive data is accessed or exfiltrated through this vulnerability, particularly in industries subject to data protection regulations.
Mitigation strategies for CVE-2023-44827 must prioritize immediate remediation through official software updates from ZenTao vendor, as patched versions should contain proper input validation and sanitization mechanisms. Organizations should implement network segmentation to limit access to affected systems and deploy web application firewalls to monitor and filter suspicious requests targeting the Office Conversion Settings function. Additional protective measures include disabling unnecessary document conversion features when not required, implementing strict input validation at multiple layers of the application architecture, and conducting regular security assessments of the software environment. Security monitoring should be enhanced to detect unusual patterns in document conversion activities, and access controls should be tightened to ensure only authorized personnel can utilize the affected functionality. The vulnerability highlights the importance of secure coding practices and input validation as fundamental security controls, particularly for applications handling user-supplied data in critical business processes. Regular vulnerability scanning and penetration testing should be implemented to identify similar weaknesses in the broader software ecosystem, while incident response procedures should be updated to address potential exploitation of this vulnerability type.