Learn about CVE-2017-16191 affecting cypserver node module by HackerOne. Discover the impact, affected versions, exploitation method, and mitigation steps.
Understanding CVE-2017-16191
What is CVE-2017-16191?
Cypserver is a file server with a security vulnerability allowing attackers to exploit directory traversal by inserting "../" in the URL, granting unauthorized access to the file system.
The Impact of CVE-2017-16191
This vulnerability can lead to unauthorized access to sensitive files and data stored on the server, potentially compromising the confidentiality and integrity of the system.
Technical Details of CVE-2017-16191
Vulnerability Description
The vulnerability in cypserver allows attackers to perform directory traversal attacks by manipulating the URL, enabling them to access files outside the intended directory structure.
Affected Systems and Versions
Exploitation Mechanism
Attackers exploit the vulnerability by injecting "../" in the URL, tricking the server into granting access to directories above the intended level, leading to unauthorized file system access.
Mitigation and Prevention
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates