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CVE-2009-5011

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Date: October 19, 2010

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.

Language: Python

Severity Score

Related Resources (9)

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

Severity Score

Weakness Type (CWE)

Race Conditions

CWE-362

Top Fix

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CVSS v3.1

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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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