CVE-2022-44006 in Professional
Summary
by MITRE • 11/17/2022
An issue was discovered in BACKCLICK Professional 5.9.63. Due to improper validation or sanitization of upload filenames, an externally reachable, unauthenticated update function permits writing files outside the intended target location. Achieving remote code execution is possible, e.g., by uploading an executable file.
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Analysis
by VulDB Data Team • 12/19/2022
The vulnerability identified as CVE-2022-44006 affects BACKCLICK Professional version 5.9.63 and represents a critical path traversal flaw in the application's file upload functionality. This issue stems from inadequate input validation and sanitization of filename parameters within the update mechanism, creating a significant security weakness that can be exploited by unauthenticated attackers. The vulnerability exists in the application's handling of file uploads, specifically when processing updates through a publicly accessible endpoint that lacks proper authorization checks.
The technical exploitation of this vulnerability relies on the absence of proper filename sanitization controls that would normally prevent directory traversal sequences such as ../ or ..\ from being processed. When an attacker uploads a file with a maliciously crafted filename containing path traversal sequences, the application fails to validate these inputs properly, allowing the file to be written to arbitrary locations on the server filesystem. This flaw directly maps to CWE-22 which defines path traversal vulnerabilities as weaknesses that occur when applications allow attackers to traverse the file system using various techniques including directory traversal sequences.
The operational impact of this vulnerability extends beyond simple unauthorized file placement, as it enables remote code execution capabilities through strategic file uploads. An attacker can leverage this vulnerability to upload executable files or scripts that can then be executed by the target system, potentially leading to complete system compromise. The unauthenticated nature of the exploit means that any external party with access to the vulnerable endpoint can immediately initiate the attack without requiring prior credentials or authorization. This represents a severe privilege escalation vector that can be exploited from any network location without additional authentication barriers.
The security implications of CVE-2022-44006 align with ATT&CK technique T1059 which covers command and scripting interpreter, as successful exploitation would likely involve uploading and executing malicious code through the compromised file upload mechanism. Organizations running BACKCLICK Professional 5.9.63 are particularly vulnerable since the flaw affects a widely used professional software solution that may be deployed in various network environments where proper network segmentation and access controls might be lacking. The vulnerability creates an attack surface that can be leveraged for persistent access, data exfiltration, or further network reconnaissance activities.
Mitigation strategies should focus on immediate patching of the affected software version, implementing proper input validation for all file upload operations, and restricting access to update functions through authentication mechanisms. Network-level controls including firewall rules and web application firewalls should be configured to limit access to the vulnerable endpoint. Additionally, implementing strict file type and name validation, using secure file upload libraries, and conducting regular security assessments of web applications can help prevent similar vulnerabilities from occurring in the future. The remediation process should include comprehensive testing to ensure that the patch does not introduce regressions while maintaining the application's intended functionality.