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The "Nginx Merge Slashes Path Traversal" module is designed to detect a vulnerability in Nginx web servers. This module specifically targets the merge_slashes directive, which when set to 'off', allows multiple slashes in a URI to remain unnormalized. This misconfiguration can potentially lead to path traversal attacks, exposing sensitive files and directories on the server. The severity of this vulnerability is classified as critical.
A successful exploitation of the Nginx Merge Slashes Path Traversal vulnerability can result in unauthorized access to sensitive files and directories on the server. This can potentially lead to the exposure of confidential information, such as user credentials, configuration files, or other sensitive data. Attackers can leverage this vulnerability to gain a foothold in the system and further exploit the compromised server.
The Nginx Merge Slashes Path Traversal module works by sending HTTP requests to the target server with a specially crafted path containing multiple slashes. It then applies matching conditions to determine if the vulnerability is present. The module checks for two specific conditions:
If any of these conditions are met, the module reports the vulnerability, allowing administrators to take appropriate actions to mitigate the risk.