GHSA-mpg6-rgp4-35rr
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in pyftpdlib
Packages
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2009-5010
- https://bugs.launchpad.net/zodb/+bug/135108
- https://github.com/giampaolo/pyftpdlib
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-7.yaml
- http://bugs.python.org/issue6706
- http://code.google.com/p/pyftpdlib/issues/detail?id=91
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
- http://code.google.com/p/pyftpdlib/source/detail?r=439
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn439&r=439&format=side&path=/trunk/pyftpdlib/ftpserver.py
- http://www.openwall.com/lists/oss-security/2010/09/09/6
- http://www.openwall.com/lists/oss-security/2010/09/11/2
- http://www.openwall.com/lists/oss-security/2010/09/22/3
- http://www.openwall.com/lists/oss-security/2010/09/24/3