CVE-2022-40771 in ServiceDesk Plus
Summary
by MITRE • 11/23/2022
Zoho ManageEngine ServiceDesk Plus versions 13010 and prior are vulnerable to an XML External Entity attack that leads to Information Disclosure.
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Analysis
by VulDB Data Team • 04/29/2025
The vulnerability identified as CVE-2022-40771 affects Zoho ManageEngine ServiceDesk Plus versions 13010 and earlier, representing a critical security flaw that exposes organizations to significant information disclosure risks. This vulnerability stems from the application's improper handling of XML data processing, specifically within its XML External Entity (XXE) processing capabilities. The flaw allows attackers to manipulate the XML parser to access internal system resources and potentially extract sensitive data through maliciously crafted XML input.
The technical implementation of this vulnerability resides in the application's XML processing logic where external entity references are not properly validated or restricted. When the service desk plus application processes XML data containing external entity declarations, it fails to implement adequate safeguards against malicious entity references. This processing behavior aligns with CWE-611, which specifically addresses Improper Restriction of XML External Entity Reference, a well-documented weakness that has been exploited in numerous security incidents across various platforms. The vulnerability enables attackers to leverage XXE attacks to access local files, perform server-side request forgery, and potentially gain unauthorized access to internal network resources.
The operational impact of this vulnerability extends beyond simple information disclosure, creating potential pathways for more severe attacks within enterprise environments. Attackers can exploit this flaw to extract configuration files, database credentials, system logs, and other sensitive organizational data that may be accessible through the XML processing interface. The vulnerability's severity is amplified by the fact that it affects a widely deployed service desk solution, making numerous organizations potential targets. Organizations using affected versions face risks of data breaches, compliance violations, and potential lateral movement within their network infrastructure, as the attack vector can be leveraged to access internal systems that may not be directly exposed to external networks.
Mitigation strategies for CVE-2022-40771 should focus on immediate patching of affected systems, as Zoho has released updates addressing this vulnerability in later versions of ServiceDesk Plus. Organizations should implement strict XML parsing configurations that disable external entity processing and DTD (Document Type Definition) declarations within the application. Network segmentation and access controls should be enhanced to limit exposure of the service desk plus application to untrusted networks. Additionally, implementing web application firewalls with XXE protection capabilities and conducting thorough security testing of XML processing components can provide additional defense layers. The remediation approach should align with ATT&CK technique T1213.002 for data from information repositories, as the vulnerability enables unauthorized access to stored information within the application's data stores. Regular security assessments and vulnerability scanning should be conducted to identify similar XML processing vulnerabilities across the organization's technology stack, as XXE vulnerabilities often remain undetected due to their subtle nature and the complexity of XML processing environments.