{"id":"UBUNTU-CVE-2010-3494","details":"Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 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 value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492.","modified":"2025-10-24T04:44:51Z","published":"2010-10-19T20:00:00Z","upstream":["CVE-2010-3494"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2010-3494"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2010-3494"},{"type":"REPORT","url":"http://code.google.com/p/pyftpdlib/issues/detail?id=104"}],"affected":[{"package":{"name":"python-pyftpdlib","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python-pyftpdlib@1.4.0-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0-1","1.4.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pyftpdlib","binary_version":"1.4.0-1"},{"binary_name":"python3-pyftpdlib","binary_version":"1.4.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2010/UBUNTU-CVE-2010-3494.json"}},{"package":{"name":"python-pyftpdlib","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python-pyftpdlib@1.5.1-4ubuntu1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.1-4ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pyftpdlib","binary_version":"1.5.1-4ubuntu1"},{"binary_name":"python3-pyftpdlib","binary_version":"1.5.1-4ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2010/UBUNTU-CVE-2010-3494.json"}},{"package":{"name":"python-pyftpdlib","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python-pyftpdlib@1.5.4-2build1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.4-1","1.5.4-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-pyftpdlib","binary_version":"1.5.4-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2010/UBUNTU-CVE-2010-3494.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}