CVE-2022-3980 in Mobile Managed On-Premises
Summary
by MITRE • 11/16/2022
An XML External Entity (XEE) vulnerability allows server-side request forgery (SSRF) and potential code execution in Sophos Mobile managed on-premises between versions 5.0.0 and 9.7.4.
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Analysis
by VulDB Data Team • 04/29/2025
The vulnerability identified as CVE-2022-3980 represents a critical XML External Entity flaw within Sophos Mobile managed on-premises deployments spanning versions 5.0.0 through 9.7.4. This issue resides in the server-side processing of XML data, specifically within the application's handling of external entity references that can be manipulated by unauthenticated attackers. The vulnerability stems from insufficient input validation and sanitization of XML content, allowing malicious actors to inject external entity declarations that can be resolved by the vulnerable system.
The technical exploitation of this vulnerability enables attackers to perform server-side request forgery attacks, where the targeted server can be coerced into making unauthorized network requests to internal systems or external endpoints. This SSRF capability extends beyond simple network reconnaissance to potentially allow code execution within the application context, particularly when combined with other attack vectors or when the affected system has access to sensitive internal resources. The flaw operates at the application layer and can be triggered through XML data inputs that are processed by the vulnerable Sophos Mobile components.
From an operational impact perspective, this vulnerability poses significant risks to organizations relying on Sophos Mobile for device management and security policy enforcement. Attackers could leverage this weakness to bypass network segmentation controls, access internal services that should remain isolated, or potentially escalate privileges within the mobile device management infrastructure. The vulnerability affects the core functionality of the on-premises deployment model, where the system's interaction with internal networks and services creates additional attack surface for malicious actors. Organizations may face unauthorized access to sensitive corporate data, disruption of mobile device management services, and potential compromise of the entire mobile security infrastructure.
Security professionals should consider this vulnerability in the context of CWE-611, which specifically addresses XML external entity processing without proper restrictions. The attack pattern aligns with ATT&CK technique T1071.004 for application layer protocol tunneling and T1566 for malicious file execution through server-side processing. Mitigation strategies include immediate deployment of vendor patches, implementing strict XML parsing configurations that disable external entity resolution, network segmentation to limit internal access, and enhanced monitoring for unusual outbound network requests. Organizations should also review their current security controls and consider implementing additional layers of protection such as web application firewalls and comprehensive network traffic analysis to detect and prevent exploitation attempts. The vulnerability underscores the importance of proper input validation and secure coding practices in enterprise mobile security solutions.