CVE-2017-16191: Directory Traversal in cypserver
Summary
CVE-2017-16191: Directory Traversal in cypserver. Affects cypserver versions >= 0.0.0. No fix is published. How to fix ↓
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Background
The cypserver package is an npm package used for local development. It provides functionality for serving files and handling HTTP requests. However, it is vulnerable to a directory traversal vulnerability, which allows malicious actors to access files outside of the intended directory root.
Vulnerability Detail
The vulnerability in cypserver arises from its resolution of relative file paths. By manipulating the file path in a specific way, an attacker can traverse directories and access files that should be restricted. This can lead to the disclosure of private files on the vulnerable system. An example request that demonstrates this vulnerability is:
GET /../../../etc/passwd HTTP/1.1
host: foo
This vulnerability has a severity rating of HIGH and is classified under CWE-22.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As there is no patch available, the only workaround is to avoid using cypserver in production environments. Instead, consider using an alternative package that provides similar functionality but does not have the directory traversal vulnerability.
Conclusion
The cypserver package is vulnerable to a directory traversal vulnerability that allows unauthorized access to files outside of the intended directory root. There is no patch available for this vulnerability, so it is advised to only use cypserver for local development and find an alternative package for production. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for cypserver →
FAQ
The impact of this vulnerability is the potential disclosure of private files on the vulnerable system. This can lead to unauthorized access to sensitive information.
No, there is no patch available for this vulnerability in the cypserver package.
Yes, this vulnerability can be exploited remotely by sending a specially crafted HTTP request to the vulnerable server.
This vulnerability has a severity rating of HIGH.
If you are using cypserver, it is recommended to only use it for local development purposes. If you require similar functionality for production, consider using a different package that does not have this vulnerability.
