CVE-2008-5862 in webcamXP
Summary
by MITRE
Directory traversal vulnerability in webcamXP 5.3.2.375 and 5.3.2.410 build 2132 allows remote attackers to read arbitrary files via a ..%2F (encoded dot dot slash) in the URI.
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Analysis
by VulDB Data Team • 11/19/2024
The vulnerability identified as CVE-2008-5862 represents a critical directory traversal flaw in webcamXP versions 5.3.2.375 and 5.3.2.410 build 2132, exposing systems to unauthorized file access through manipulated URI requests. This issue stems from inadequate input validation within the web application's file handling mechanisms, allowing malicious actors to bypass normal access controls and retrieve sensitive system files. The vulnerability specifically leverages encoded dot dot slash sequences in Uniform Resource Identifiers, exploiting the application's failure to properly sanitize user-supplied input before processing file requests. The flaw exists at the application layer where the software fails to validate or normalize file paths received through HTTP requests, creating a pathway for attackers to navigate the file system beyond intended boundaries.
The technical implementation of this vulnerability involves the manipulation of URI parameters using URL encoding to represent the directory traversal sequence. When an attacker submits a request containing ..%2F sequences in the URI, the webcamXP application processes these encoded characters without proper validation, allowing the application to interpret the request as a legitimate attempt to access parent directories. This flaw falls under the Common Weakness Enumeration category CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal vulnerabilities. The weakness occurs because the application does not implement proper input sanitization or path validation mechanisms, enabling attackers to craft malicious requests that can access files outside the intended web root directory.
From an operational perspective, this vulnerability presents significant security implications for systems running affected webcamXP versions, as it allows remote attackers to access arbitrary files on the server hosting the application. Attackers could potentially retrieve configuration files, user credentials, system logs, or other sensitive data that might be stored within the application's directory structure. The impact extends beyond simple file reading, as successful exploitation could lead to further system compromise through information disclosure, privilege escalation, or as a stepping stone for additional attacks. The remote nature of this vulnerability means that attackers do not require local system access or authentication to exploit the flaw, making it particularly dangerous in networked environments where the application might be accessible from the internet. This vulnerability aligns with the MITRE ATT&CK framework's technique T1083 for discovering system information and T1566 for credential access, as it enables attackers to gather sensitive information that could be used for further exploitation.
The mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization mechanisms within the webcamXP application. Organizations should immediately upgrade to patched versions of webcamXP that address this directory traversal vulnerability, as the manufacturer likely released security updates to resolve the issue. Additionally, administrators should implement web application firewalls or security filters that can detect and block suspicious URI patterns containing encoded directory traversal sequences. Network segmentation and access controls should be enforced to limit exposure of vulnerable applications to untrusted networks, while also ensuring that the application runs with minimal necessary privileges to reduce potential impact from successful exploitation. The remediation process should include comprehensive security testing of the application's file handling mechanisms to ensure that all input paths are properly validated and normalized before processing, preventing similar vulnerabilities from emerging in other components of the system.