CVE-2007-6737: Improper Authentication in pyftpdlib
Summary
CVE-2007-6737: Improper Authentication in pyftpdlib. Affects pyftpdlib versions < 0.2.0. Fixed in 0.2.0. How to fix ↓
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Background
pyftpdlib is a Python FTP server library that provides a high-level interface for implementing FTP servers. It allows developers to create custom FTP servers with ease. However, versions before 0.2.0 are vulnerable to an improper authentication issue. This vulnerability can be exploited by remote attackers to gain unauthorized access through a brute-force attack.
Vulnerability Detail
The vulnerability in pyftpdlib arises from the FTPServer.py file. In affected versions, the attempted_logins count is not incremented when an invalid username is provided in a USER command. This oversight makes it easier for attackers to launch brute-force attacks and gain unauthorized access to the FTP server. The impact of this vulnerability can be significant, as it compromises the confidentiality and integrity of the data stored on the server.
How To Fix
Minimum fixed version
0.2.0
This is the first release that contains the fix.
pip install --upgrade "pyftpdlib==0.2.0"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround provided for this vulnerability. However, users can implement additional security measures such as rate limiting or account lockouts to mitigate the risk of brute-force attacks. It is important to note that these measures are not a substitute for upgrading to the fixed version of pyftpdlib.
Conclusion
The vulnerability in pyftpdlib allows remote attackers to gain unauthorized access to FTP servers. To mitigate this risk, it is crucial to upgrade to pyftpdlib version 0.2.0 or later. Implementing additional security measures can provide further protection. For more information and support on vulnerability remediation, please contact DevNack.com.
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FAQ
pyftpdlib is a Python library that allows developers to create custom FTP servers.
This vulnerability allows remote attackers to gain unauthorized access to the FTP server through brute-force attacks.
To fix this vulnerability, upgrade to pyftpdlib version 0.2.0 or later.
While there are no specific workarounds, implementing additional security measures like rate limiting or account lockouts can help mitigate the risk.
Yes, there are other FTP server libraries available in Python, such as ftplib and pyftpdlib.
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