CVE-2024-2178 in lollms-webui
Summary
by MITRE • 06/02/2024
A path traversal vulnerability exists in the parisneo/lollms-webui, specifically within the 'copy_to_custom_personas' endpoint in the 'lollms_personalities_infos.py' file. This vulnerability allows attackers to read arbitrary files by manipulating the 'category' and 'name' parameters during the 'Copy to custom personas folder for editing' process. By inserting '../' sequences in these parameters, attackers can traverse the directory structure and access files outside of the intended directory. Successful exploitation results in unauthorized access to sensitive information.
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Analysis
by VulDB Data Team • 06/03/2024
The path traversal vulnerability identified in CVE-2024-2178 affects the parisneo/lollms-webui application, specifically targeting the 'copy_to_custom_personas' endpoint within the 'lollms_personalities_infos.py' file. This flaw represents a critical security weakness that directly violates the principle of least privilege and proper input validation. The vulnerability stems from inadequate sanitization of user-supplied parameters during file operations, creating an avenue for attackers to manipulate the application's directory navigation behavior. The affected endpoint handles the process of copying personality configurations to custom personas folders, making it a legitimate access point that attackers can exploit to gain unauthorized file system access. This type of vulnerability falls under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The technical implementation of this vulnerability occurs when the application processes the 'category' and 'name' parameters without proper validation or sanitization of directory traversal sequences. Attackers can manipulate these parameters by injecting '../' sequences that effectively navigate up the directory tree, bypassing intended file access restrictions. The flaw exists because the application does not properly validate or canonicalize the input paths before using them in file system operations. When an attacker submits malicious input containing directory traversal sequences, the application processes these requests without adequate safeguards, allowing the execution of arbitrary file reads from locations outside the intended scope. This vulnerability operates at the application layer and can be exploited through web-based interfaces, making it particularly dangerous as it requires no special privileges or system-level access to exploit.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the ability to access sensitive data that may include configuration files, user credentials, application source code, or other confidential information stored within the application's directory structure. Successful exploitation could lead to complete system compromise, especially if the application has elevated privileges or if sensitive files are accessible through the traversed paths. The vulnerability affects the confidentiality and integrity of the system, as unauthorized parties can access, modify, or exfiltrate data that should remain protected. This type of attack can be particularly devastating in environments where the application handles personal data, proprietary information, or serves as a component in larger security infrastructures. The attack surface is significant as the vulnerability affects the core functionality of persona management within the application, making it a high-value target for threat actors seeking to escalate privileges or gain deeper system access.
Mitigation strategies for CVE-2024-2178 should focus on implementing robust input validation and sanitization mechanisms that prevent directory traversal sequences from being processed. The most effective approach involves canonicalizing all user-supplied paths by removing or escaping directory traversal sequences before any file system operations occur. Implementing a whitelist-based validation system that only allows predefined safe characters and path structures can prevent malicious input from being processed. Additionally, the application should enforce strict file access controls using secure coding practices such as using secure libraries for file operations, implementing proper privilege separation, and ensuring that file operations occur within designated safe directories. Organizations should also consider implementing web application firewalls that can detect and block suspicious path traversal patterns, as well as conducting regular security audits and penetration testing to identify similar vulnerabilities. This vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing), as it enables attackers to discover and access sensitive files that could be used for further attacks or data exfiltration. The remediation process should include immediate patching of the affected application, thorough code review of similar functions, and implementation of comprehensive logging and monitoring to detect potential exploitation attempts.