Description
Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.1 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, a different vulnerability than CVE-2010-3494.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | pyftpdlib | < 0.5.1 | 0.5.1 | GHSA-mpg6-rgp4-35rr |
References
- [oss-security] 20100910 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases mailing-list
- http://code.google.com/p/pyftpdlib/issues/detail?id=91
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
- https://bugs.launchpad.net/zodb/+bug/135108
- http://code.google.com/p/pyftpdlib/source/detail?r=439
- [oss-security] 20100924 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases mailing-list
- [oss-security] 20100922 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases mailing-list
- http://bugs.python.org/issue6706
- [oss-security] 20100909 CVE Request -- Python -- accept() implementation in async core is broken => more subcases mailing-list
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn439&r=439&format=side&path=/trunk/pyftpdlib/ftpserver.py