CVE-2022-46305 in Panorama
Summary
by MITRE • 01/03/2023
ChangingTec ServiSign component has a path traversal vulnerability. An unauthenticated LAN attacker can exploit this vulnerability to bypass authentication and access arbitrary system files.
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Analysis
by VulDB Data Team • 01/27/2023
The CVE-2022-46305 vulnerability resides within the ChangingTec ServiSign component, representing a critical path traversal flaw that fundamentally compromises system security. This vulnerability specifically affects the authentication mechanisms of the ServiSign component, which is designed to handle digital signature operations and system access controls. The flaw allows an attacker to manipulate file path references through crafted requests, enabling unauthorized access to system resources that should remain protected. The vulnerability is particularly concerning because it operates without requiring authentication, meaning any attacker within the local network can exploit this weakness to gain access to sensitive system files and potentially escalate their privileges.
The technical implementation of this path traversal vulnerability stems from insufficient input validation and improper path handling within the ServiSign component's file access routines. When processing user requests, the system fails to properly sanitize or validate file path parameters, allowing attackers to inject malicious path sequences such as "../" or similar traversal patterns. This weakness directly maps to CWE-22, which defines path traversal vulnerabilities as flaws in input validation where attackers can manipulate file access paths to access unauthorized files. The vulnerability exists in the component's handling of file system operations, where relative paths are not properly normalized or validated before being processed, creating an opportunity for attackers to navigate outside the intended directory structure and access arbitrary files on the system.
From an operational perspective, this vulnerability presents a severe risk to organizations deploying ChangingTec ServiSign components, particularly in environments where local network access is not strictly controlled. An unauthenticated LAN attacker can leverage this vulnerability to access sensitive configuration files, system logs, authentication credentials, and potentially system binaries that could be used for further exploitation. The impact extends beyond simple file access, as attackers could potentially discover and exploit additional vulnerabilities within the system or use the acquired information to establish persistent access. The vulnerability's location within a signature component also means that attackers could potentially access cryptographic keys or certificates used for digital signatures, compromising the integrity of the entire system's security infrastructure. This type of attack aligns with ATT&CK technique T1074.001, which describes data staging through path traversal methods, and represents a critical entry point for lateral movement within network environments.
Mitigation strategies for CVE-2022-46305 must address both immediate remediation and long-term security hardening measures. Organizations should prioritize applying vendor-provided patches or updates that correct the path traversal vulnerability in the ServiSign component, as these patches typically implement proper input validation and path normalization. Network segmentation and access controls should be implemented to limit local network access to only authorized personnel, reducing the attack surface for this particular vulnerability. Additionally, implementing proper file access controls and privilege separation within the ServiSign component can help limit the damage even if the vulnerability is exploited. Regular security auditing of file access patterns and monitoring for unusual file system activity can help detect exploitation attempts. The vulnerability's nature suggests that implementing a principle of least privilege for file system access within the component, combined with proper input validation and output encoding, would significantly reduce the risk of exploitation. Organizations should also consider implementing network monitoring solutions that can detect and alert on suspicious path traversal patterns in file access requests, as this type of attack often follows predictable patterns that can be identified through behavioral analysis.