CVE-2024-3783 in WBSAirback
Summary
by MITRE • 04/15/2024
The Backup Agents section in WBSAirback 21.02.04 is affected by a Path Traversal vulnerability, allowing a user with low privileges to download files from the system.
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Analysis
by VulDB Data Team • 04/15/2024
The vulnerability identified as CVE-2024-3783 resides within the Backup Agents functionality of WBSAirback version 21.02.04, representing a critical path traversal flaw that undermines the system's file access controls. This vulnerability specifically affects the backup agent management interface where legitimate users can potentially exploit improper input validation mechanisms to access files outside of their intended scope. The flaw allows attackers with minimal privileges to navigate through the file system hierarchy and retrieve sensitive data that should remain restricted to authorized personnel only.
The technical implementation of this vulnerability stems from inadequate sanitization of user-supplied input parameters within the backup agent file download functionality. When users interact with the backup agents section, the application fails to properly validate or sanitize the file paths provided by the client, enabling attackers to manipulate these inputs through directory traversal sequences such as ../ or ..\ to access files located in parent directories. This weakness directly aligns with CWE-22, which categorizes path traversal vulnerabilities as improper input validation that allows attackers to access files and directories outside of the intended scope. The vulnerability operates at the application layer where user inputs are processed without adequate security controls to prevent malicious path manipulation attempts.
The operational impact of CVE-2024-3783 extends beyond simple unauthorized file access, creating potential risks for data confidentiality and system integrity within backup environments. Attackers could potentially access configuration files, backup credentials, system logs, or even sensitive business data stored in accessible directories through this vulnerability. The low privilege requirement makes this flaw particularly dangerous as it can be exploited by users who normally have limited access rights, potentially escalating their privileges or gaining insights into the system's internal structure and data organization. This vulnerability may also provide attackers with information useful for further exploitation attempts, as backup systems often contain sensitive configuration details and data that can aid in lateral movement within the network.
Organizations utilizing WBSAirback 21.02.04 should implement immediate mitigations including input validation improvements, proper path normalization, and access control enforcement within the backup agent management interface. The recommended approach involves implementing strict input filtering that rejects any path traversal sequences and enforcing proper file access controls that limit file operations to designated directories. Additionally, organizations should consider implementing the principle of least privilege for backup agent users and establishing monitoring procedures to detect anomalous file access patterns. This vulnerability may also trigger defensive measures related to the ATT&CK technique T1213.002, which covers data from backup systems, indicating that adversaries might leverage such vulnerabilities to access sensitive data through backup infrastructure. System administrators should also consider implementing network segmentation and access controls to limit the impact of potential exploitation attempts and establish comprehensive audit trails to track unauthorized access attempts.