CVE-2021-44652 in O365 Manager Plus
Summary
by MITRE • 01/12/2022
Zoho ManageEngine O365 Manager Plus before Build 4416 allows remote code execution via BCP file overwrite through the ChangeDBAPI component.
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Analysis
by VulDB Data Team • 01/15/2022
The vulnerability identified as CVE-2021-44652 affects Zoho ManageEngine O365 Manager Plus version prior to Build 4416 and represents a critical remote code execution flaw within the ChangeDBAPI component. This vulnerability arises from improper handling of BCP file operations that enables attackers to overwrite critical system files through crafted malicious input. The flaw exists in the database management functionality of the application where BCP (Bulk Copy Program) files are processed, creating an avenue for arbitrary code execution on the targeted system. The vulnerability stems from insufficient input validation and file handling mechanisms that fail to properly sanitize user-supplied data before processing BCP file operations.
The technical implementation of this vulnerability involves the exploitation of a path traversal or file overwrite condition within the ChangeDBAPI module. Attackers can manipulate the BCP file upload process to place malicious files in critical system directories, potentially leading to privilege escalation and complete system compromise. This flaw operates at the application layer and requires network access to the affected system, making it particularly dangerous in environments where the application is exposed to untrusted networks. The vulnerability aligns with CWE-22 Path Traversal and CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component, as it involves improper handling of file paths and user input that could be used to execute arbitrary commands.
The operational impact of this vulnerability is severe as it allows remote attackers to execute arbitrary code on the affected system without requiring authentication. Successful exploitation could result in complete system compromise, data exfiltration, and persistence mechanisms being established within the network. Organizations using affected versions of O365 Manager Plus face significant risk of unauthorized access to their Microsoft 365 environments, potentially leading to credential theft, data breaches, and lateral movement within their network infrastructure. The vulnerability affects organizations that rely on Zoho's cloud management platform for Microsoft 365 administration, particularly those with exposed management interfaces or insufficient network segmentation controls.
Security mitigations for this vulnerability should prioritize immediate patching of affected systems to Build 4416 or later versions that contain the necessary fixes for the ChangeDBAPI component. Network segmentation should be implemented to restrict access to the application to trusted networks only, while also applying firewall rules to limit exposure of the affected service ports. Organizations should conduct thorough network monitoring to detect any suspicious file upload activities or unauthorized access attempts. Additional defensive measures include implementing strict input validation controls, disabling unnecessary file upload functionality where possible, and maintaining comprehensive audit logs of database operations. The vulnerability also maps to ATT&CK technique T1059 Command and Scripting Interpreter and T1078 Valid Accounts, as exploitation would likely involve command execution and credential compromise. Regular security assessments and vulnerability scanning should be conducted to identify similar flaws in other components of the Zoho ManageEngine suite, as this vulnerability demonstrates potential for similar issues in database management interfaces.