CVE-2009-5010

Name	CVE-2009-5010
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-pyftpdlib (PTS)	buster	1.5.4-1	fixed
	bullseye	1.5.4-2	fixed
	bookworm	1.5.7-3	fixed
	sid, trixie	1.5.9-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
python-pyftpdlib	source	(unstable)	(not affected)

- python-pyftpdlib <not-affected> (Fixed before initial upload to the archive)