CVE-2022-32573 in Lansweeper
Summary
by MITRE • 12/15/2022
A directory traversal vulnerability exists in the AssetActions.aspx addDoc functionality of Lansweeper lansweeper 10.1.1.0. A specially-crafted HTTP request can lead to arbitrary file upload. An attacker can send an HTTP request to trigger this vulnerability.
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Analysis
by VulDB Data Team • 12/15/2022
The vulnerability identified as CVE-2022-32573 represents a critical directory traversal flaw within the Lansweeper asset management platform version 10.1.1.0. This weakness specifically affects the AssetActions.aspx addDoc functionality, which is designed to handle document uploads within the system's asset tracking capabilities. The vulnerability stems from insufficient input validation and improper path handling when processing file upload requests, creating an exploitable condition that allows unauthorized users to manipulate file storage locations. Lansweeper is widely deployed across enterprise environments for network asset discovery and management, making this vulnerability particularly concerning for organizations relying on its services for critical infrastructure monitoring and inventory management.
The technical implementation of this directory traversal vulnerability occurs when the application fails to properly sanitize user-supplied input during the document upload process. Attackers can craft malicious HTTP requests that include directory traversal sequences such as ../ or ..\ in the file path parameters, enabling them to bypass intended file storage restrictions. This flaw operates at the application layer and can be exploited through HTTP requests without requiring authentication, making it particularly dangerous as it can be leveraged by remote attackers. The vulnerability is classified as CWE-22 Directory Traversal, which is a well-documented weakness in software applications where input validation fails to properly restrict access to files and directories outside of the intended scope. The specific implementation allows for arbitrary file upload capabilities, where malicious files can be placed in unintended directories, potentially leading to code execution or data compromise.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it can enable attackers to gain persistent access to the affected system. Once exploited, an attacker can upload malicious files such as web shells or backdoor executables to the server, potentially leading to complete system compromise. The vulnerability affects organizations using Lansweeper for asset management, which typically includes sensitive network infrastructure data, system configurations, and asset inventories. The implications are severe because Lansweeper is often deployed in enterprise environments where it serves as a central repository for critical asset information, making it a prime target for attackers seeking to gain access to sensitive organizational data. This vulnerability can be leveraged as part of broader attack campaigns, potentially enabling lateral movement within networks or serving as a foothold for more extensive compromises. The attack vector aligns with ATT&CK technique T1078 Valid Accounts, as the vulnerability allows for unauthorized access to system resources without requiring legitimate credentials, though it also represents a direct path to T1566 Phishing, where attackers might use the compromised system to launch further attacks.
Organizations affected by CVE-2022-32573 should implement immediate mitigations including applying the vendor-provided patches or updates, disabling the vulnerable functionality if possible, and implementing network-level restrictions to prevent unauthorized access to the AssetActions.aspx endpoint. Security teams should conduct comprehensive vulnerability assessments to identify any potential exploitation attempts and monitor system logs for suspicious activity related to file uploads. The remediation process should include reviewing file upload restrictions and implementing proper input validation mechanisms to prevent directory traversal attacks. Additionally, organizations should consider network segmentation to limit access to the Lansweeper application and implement web application firewalls to detect and block malicious requests attempting to exploit this vulnerability. Regular security assessments and penetration testing should be conducted to identify similar weaknesses in other applications within the organization's attack surface, ensuring comprehensive protection against similar directory traversal vulnerabilities. The vulnerability underscores the importance of secure coding practices and input validation in web applications, particularly those handling user-supplied data for file operations.