CVE-2018-16473 in takeapeek Module
Summary
by MITRE
A path traversal in takeapeek module versions <=0.2.2 allows an attacker to list directory and files.
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Analysis
by VulDB Data Team • 04/10/2020
The vulnerability identified as CVE-2018-16473 represents a critical path traversal flaw within the takeapeek module, specifically affecting versions 0.2.2 and earlier. This security weakness resides in the module's improper handling of file paths during directory listing operations, creating an avenue for malicious actors to access unauthorized filesystem locations. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly restrict user-supplied path parameters, allowing attackers to manipulate directory traversal sequences such as ../ or ..\ to navigate beyond intended directories.
The technical implementation of this flaw demonstrates a classic path traversal vulnerability categorized under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory. The takeapeek module fails to validate or sanitize user-provided input before using it in filesystem operations, enabling attackers to craft malicious requests that bypass normal access controls. When the module processes directory listing requests, it directly incorporates user-supplied path data into its filesystem calls without proper boundary checks or canonicalization, creating a scenario where an attacker can enumerate files and directories outside the intended scope of the application's access permissions.
Operationally, this vulnerability presents significant risks to systems running affected versions of the takeapeek module, particularly in environments where sensitive data might be stored in accessible filesystem locations. Attackers can exploit this flaw to gain unauthorized access to directory listings, potentially exposing confidential files, configuration data, or system information that should remain protected. The impact extends beyond simple information disclosure, as the ability to enumerate directory structures provides attackers with valuable reconnaissance data for planning more sophisticated attacks. This vulnerability particularly affects web applications that utilize the takeapeek module for file browsing or directory listing functionality, where the module's insecure implementation creates persistent access vectors for malicious actors.
Organizations should implement immediate mitigations including upgrading to versions of the takeapeek module that address this vulnerability, typically versions 0.2.3 or later that include proper input validation and path sanitization measures. System administrators should also consider implementing additional protective measures such as restricting file access permissions, implementing web application firewalls that can detect and block path traversal attempts, and conducting thorough security reviews of all modules that handle filesystem operations. The vulnerability aligns with ATT&CK technique T1083, which covers directory listing, and represents a fundamental security failure that violates core principles of least privilege and input validation. Remediation efforts should also include comprehensive testing to ensure that no other components within the application architecture are susceptible to similar path traversal vulnerabilities, as this flaw often indicates broader security architecture weaknesses that require systematic review and strengthening.