CVE-2024-3787 in WBSAirback
Summary
by MITRE • 05/14/2024
Vulnerability in WBSAirback 21.02.04, which involves improper neutralisation of Server-Side Includes (SSI), through S3 disks (/admin/DeviceS3). Exploitation of this vulnerability could allow a remote user to execute arbitrary code.
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Analysis
by VulDB Data Team • 03/28/2025
This vulnerability exists within WBSAirback version 21.02.04 and specifically affects the S3 disk management interface accessible through the /admin/DeviceS3 endpoint. The core issue stems from inadequate input validation and sanitization of Server-Side Includes directives, creating a path for malicious input to be processed as executable code on the server. The vulnerability represents a critical security flaw that directly violates secure coding principles and exposes the system to remote code execution attacks. According to CWE-116, this weakness falls under improper neutralization of special elements used in system commands, specifically manifesting in the improper handling of SSI directives. The vulnerability creates an attack surface where unauthenticated remote adversaries can manipulate input fields within the S3 disk configuration interface to inject malicious SSI commands that will be executed by the web server with the privileges of the web application.
The technical exploitation of this vulnerability requires an attacker to navigate to the /admin/DeviceS3 administrative endpoint and submit specially crafted input containing Server-Side Includes directives. When the application processes this input without proper sanitization, the SSI parser will execute the embedded commands as part of the server-side processing, potentially allowing arbitrary code execution on the target system. This type of vulnerability aligns with ATT&CK technique T1190, which describes the exploitation of vulnerabilities in web applications to execute arbitrary code. The flaw demonstrates a classic case of insufficient input sanitization where user-controllable data flows directly into server-side processing without proper validation or encoding mechanisms. The impact extends beyond simple code execution to potentially allow full system compromise, as the executed commands would operate with the privileges of the web server process, which may include administrative access to underlying storage systems and database resources.
The operational impact of this vulnerability is severe and potentially catastrophic for organizations relying on WBSAirback for backup and storage management. Remote code execution capabilities enable attackers to gain complete control over the affected system, potentially leading to data exfiltration, system compromise, and further lateral movement within the network infrastructure. Organizations using this software may face unauthorized access to backup storage systems, which could contain sensitive corporate data, personal information, or intellectual property. The vulnerability affects the administrative interface specifically, meaning that successful exploitation could allow attackers to modify storage configurations, access backup data, or even delete critical backup sets. According to industry best practices and security frameworks, this type of vulnerability should be classified as critical and require immediate remediation. The lack of proper input validation in the S3 disk management component creates a persistent threat vector that could be exploited by automated scanning tools or determined attackers without requiring authentication or specialized knowledge of the system architecture. Organizations should consider this vulnerability as part of their broader threat modeling efforts and implement network segmentation to limit access to administrative interfaces.
Mitigation strategies should include immediate patching of the affected WBSAirback version to address the SSI neutralization issue. Organizations should implement network-level restrictions to limit access to the /admin/DeviceS3 endpoint to trusted administrative networks only. Input validation should be strengthened to reject any SSI directives or special characters that could be used for server-side include injection. Security monitoring should be enhanced to detect unusual patterns in administrative interface access and input submission. The implementation of web application firewalls and input sanitization mechanisms can provide additional layers of protection. According to NIST SP 800-53 security controls, this vulnerability requires immediate remediation through proper input validation and access controls. Regular security assessments should be conducted to identify similar input validation weaknesses in other components of the backup infrastructure. Organizations should also consider implementing principle of least privilege access controls for administrative interfaces and ensure that all administrative functions are properly authenticated and authorized. The vulnerability highlights the importance of secure coding practices and input sanitization, particularly when handling user-supplied data in server-side processing contexts.