CVE-2024-3786 in WBSAirback
Summary
by MITRE • 04/15/2024
Vulnerability in WBSAirback 21.02.04, which involves improper neutralisation of Server-Side Includes (SSI), through Device Synchronizations (/admin/DeviceReplication). Exploitation of this vulnerability could allow a remote user to execute arbitrary code.
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Analysis
by VulDB Data Team • 04/10/2025
The vulnerability identified as CVE-2024-3786 affects WBSAirback version 21.02.04 and represents a critical server-side includes injection flaw within the device synchronization functionality. This vulnerability exists in the administrative DeviceReplication endpoint, where the application fails to properly sanitize user-supplied input before processing Server-Side Includes directives. The improper neutralisation creates an environment where malicious actors can inject arbitrary SSI commands that execute on the server, potentially leading to complete system compromise.
The technical exploitation of this vulnerability occurs through the Device Synchronizations feature which handles device replication requests. When a remote attacker submits specially crafted input containing SSI directives to the /admin/DeviceReplication endpoint, the application processes these inputs without adequate validation or sanitization. This allows attackers to inject commands such as <!--#exec cmd="command" --> or similar SSI constructs that execute with the privileges of the web application server. The flaw stems from insufficient input validation and output encoding practices, making it susceptible to server-side request forgery and remote code execution attacks.
From an operational impact perspective, this vulnerability poses significant risks to organizations using WBSAirback 21.02.04, as it enables remote code execution without authentication requirements. Attackers can leverage this to gain full control over the affected system, potentially leading to data exfiltration, system compromise, or further lateral movement within the network. The vulnerability's accessibility through the administrative interface increases the attack surface significantly, as it may be exploited by threat actors with minimal privileges. Organizations relying on this backup and replication solution face potential business disruption and data loss risks.
Mitigation strategies for CVE-2024-3786 should prioritize immediate patching of the WBSAirback application to the latest version that addresses this vulnerability. Until patches are applied, organizations should implement network-level restrictions to limit access to the /admin/DeviceReplication endpoint, particularly blocking external access to administrative functions. Additionally, input validation should be strengthened at the application level to sanitize all user-supplied data before processing, implementing proper encoding techniques to prevent SSI directive injection. Security monitoring should be enhanced to detect suspicious patterns in device synchronization requests, and access controls should be reviewed to ensure least privilege principles are maintained. This vulnerability aligns with CWE-94 (Improper Control of Generation of Code) and maps to ATT&CK technique T1059.007 (Command and Scripting Interpreter: PowerShell) and T1190 (Exploit Public-Facing Application) within the MITRE ATT&CK framework.