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CVE-2009-5010

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Date: October 3, 2022

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.

Language: Python

Severity Score

Related Resources (12)

https://bugs.launchpad.net/zodb/+bug/135108
http://www.openwall.com/lists/oss-security/2010/09/22/3
http://www.openwall.com/lists/oss-security/2010/09/24/3
https://nvd.nist.gov/vuln/detail/CVE-2009-5010
http://bugs.python.org/issue6706
http://code.google.com/p/pyftpdlib/issues/detail?id=91
http://www.openwall.com/lists/oss-security/2010/09/09/6
http://code.google.com/p/pyftpdlib/source/diff?spec=svn439&r=439&format=side&path=/trunk/pyftpdlib/ftpserver.py
http://www.openwall.com/lists/oss-security/2010/09/11/2
http://code.google.com/p/pyftpdlib/source/detail?r=439
http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
https://www.mend.io/vulnerability-database/CVE-2009-5010

Severity Score

Weakness Type (CWE)

Race Conditions

CWE-362

Top Fix

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CVSS v3

Base Score:
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV):
Access Complexity (AC):
Authentication (AU):
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW
Additional information:

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