National Cyber Awareness System

Vulnerability Summary for CVE-2010-3494

Overview

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 accept function having an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: MISC

Name: http://bugs.python.org/issue6706

Type: Patch Information

Hyperlink:http://bugs.python.org/issue6706

External Source: MISC

Name: https://bugs.launchpad.net/zodb/+bug/135108

Hyperlink:https://bugs.launchpad.net/zodb/+bug/135108

External Source: MLIST

Name: [oss-security] 20100924 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases

Hyperlink:http://www.openwall.com/lists/oss-security/2010/09/24/3

External Source: MLIST

Name: [oss-security] 20100922 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases

Hyperlink:http://www.openwall.com/lists/oss-security/2010/09/22/3

External Source: MLIST

Name: [oss-security] 20100910 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases

Hyperlink:http://www.openwall.com/lists/oss-security/2010/09/11/2

External Source: MLIST

Name: [oss-security] 20100909 CVE Request -- Python -- accept() implementation in async core is broken => more subcases

Hyperlink:http://www.openwall.com/lists/oss-security/2010/09/09/6

External Source: CONFIRM

Name: http://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py

Hyperlink:http://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py

External Source: CONFIRM

Name: http://code.google.com/p/pyftpdlib/source/detail?r=556

Hyperlink:http://code.google.com/p/pyftpdlib/source/detail?r=556

External Source: CONFIRM

Name: http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY

Hyperlink:http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY

External Source: CONFIRM

Name: http://code.google.com/p/pyftpdlib/issues/detail?id=105

Hyperlink:http://code.google.com/p/pyftpdlib/issues/detail?id=105

External Source: CONFIRM

Name: http://code.google.com/p/pyftpdlib/issues/detail?id=104

Hyperlink:http://code.google.com/p/pyftpdlib/issues/detail?id=104