CVE-2023-43256 in Assistant
Summary
by MITRE • 09/25/2023
A path traversal in Gladys Assistant v4.26.1 and below allows authenticated attackers to extract sensitive files in the host machine by exploiting a non-sanitized user input.
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Analysis
by VulDB Data Team • 02/04/2026
The vulnerability CVE-2023-43256 represents a critical path traversal flaw in Gladys Assistant version 4.26.1 and earlier, which exposes systems to unauthorized file access through authenticated attack vectors. This issue arises from insufficient input validation within the application's file handling mechanisms, allowing malicious users with valid credentials to manipulate file paths and access sensitive data stored on the host system. The vulnerability specifically affects the application's ability to properly sanitize user-supplied input before processing file operations, creating a direct pathway for attackers to navigate beyond intended directories and retrieve confidential information.
The technical implementation of this vulnerability stems from improper input sanitization practices within the Gladys Assistant framework, where user-provided file paths are not adequately validated or filtered before being processed by the system's file access routines. This weakness aligns with CWE-22, which categorizes path traversal vulnerabilities as a fundamental flaw in input validation and access control mechanisms. Attackers can exploit this by crafting malicious file path requests that leverage directory traversal sequences such as "../" or similar constructs to move up the directory hierarchy and access files outside the intended application scope. The authenticated nature of this vulnerability requires an attacker to first obtain valid user credentials, but once achieved, the impact extends to full system file access capabilities.
Operationally, this vulnerability presents a significant risk to organizations utilizing Gladys Assistant for home automation or smart home management systems, as it can lead to exposure of configuration files, user credentials, system logs, and potentially sensitive personal data. The impact extends beyond simple file access to include potential system compromise, data exfiltration, and unauthorized modification of system components. Attackers could leverage this vulnerability to extract database files containing user information, access system configuration files that may reveal network topology details, or retrieve application logs that could provide further attack vectors. The vulnerability's severity is amplified by the fact that it affects the entire host machine rather than just the application's isolated environment, potentially enabling lateral movement within networked systems.
Mitigation strategies for CVE-2023-43256 should focus on immediate patching of affected versions to address the underlying input sanitization flaws, while implementing additional defensive measures such as strict file path validation, mandatory input filtering, and comprehensive access control mechanisms. Organizations should enforce principle of least privilege for application users, implement robust monitoring for unusual file access patterns, and conduct thorough security assessments of all file handling operations within the application. The remediation process should include validating all user input through whitelisting approaches, implementing proper directory traversal checks, and ensuring that file operations are performed within designated safe directories. This vulnerability demonstrates the critical importance of input validation and access control in preventing unauthorized system access, aligning with ATT&CK technique T1078 for valid accounts and T1566 for credential harvesting through application exploitation. Regular security updates and comprehensive code review practices are essential to prevent similar vulnerabilities from emerging in future releases.