{"id":"DEBIAN-CVE-2009-5011","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 getpeername function having an ENOTCONN error, a different vulnerability than CVE-2010-3494.","modified":"2026-09-22T16:47:22.944444851Z","published":"2010-10-19T20:00:03.017Z","upstream":["CVE-2009-5011"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2009-5011"}],"affected":[{"package":{"name":"python-pyftpdlib","ecosystem":"Debian:12","purl":"pkg:deb/debian/python-pyftpdlib?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-5011.json"}},{"package":{"name":"python-pyftpdlib","ecosystem":"Debian:13","purl":"pkg:deb/debian/python-pyftpdlib?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-5011.json"}},{"package":{"name":"python-pyftpdlib","ecosystem":"Debian:14","purl":"pkg:deb/debian/python-pyftpdlib?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-5011.json"}}],"schema_version":"1.9.0"}