CVE-2009-5011

EPSS 0.44%

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in pyftpdlib

Published: 5/2/2022Modified: 10/15/2024

Also known as:GHSA-62xg-239j-vxg7DEBIAN-CVE-2009-5011PYSEC-2010-8

Description

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.

Affected packages (3)

Debian/python-pyftpdlibfrom 0, < 0.5.2-1
PyPI/pyftpdlibfrom 0, < 0.5.2
PyPI/pyftpdlibfrom 0, < 0.5.2

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References (9)

ADVISORYhttps://github.com/advisories/GHSA-62xg-239j-vxg7
ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2009-5011
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2009-5011
PATCHhttps://github.com/giampaolo/pyftpdlib
WEBhttp://code.google.com/p/pyftpdlib/issues/detail?id=100
WEBhttp://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
WEBhttp://code.google.com/p/pyftpdlib/source/detail?r=543
WEBhttp://code.google.com/p/pyftpdlib/source/diff?spec=svn543&r=543&format=side&path=/trunk/pyftpdlib/ftpserver.py
WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-8.yaml