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CVE-2009-5011

Published: Oct 19, 2010Updated: Apr 29, 2026 Sources: CVE List NVD GHSACWE-362
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.9%
Top 43.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:MAu:NC:NI:NA:P
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:PAvailability
Partial
Open in CVSS calculator →

Weaknesses

CWE-362

Affected Products

pyftpdlibg.rodola
Library
OSS Libraries / generic-library
pyftpdlibPyPIOSS Libraries
n/an/a
g.rodolaoss-projectOSS Librariesaka pyftpdlib
pypipackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

http://code.google.com/p/pyftpdlib/issues/detail?id=100
code.google.com
http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
code.google.com
http://code.google.com/p/pyftpdlib/source/detail?r=543
code.google.com
and 4 more references View all →

Timeline

Published
Oct 19, 2010
Last Updated
Apr 29, 2026

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