CVE-2010-3494

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    CVE-2010-3494

    Published: 19 Oct 2010Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: http://bugs.python.org/issue6706, http://code.google.com/p/pyftpdlib/issues/detail?id=104, http://code.google.com/p/pyftpdlib/issues/detail?id=105, http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY, http://code.google.com/p/pyftpdlib/source/detail?r=556, http://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py, http://www.openwall.com/lists/oss-security/2010/09/09/6, http://www.openwall.com/lists/oss-security/2010/09/11/2, http://www.openwall.com/lists/oss-security/2010/09/22/3, http://www.openwall.com/lists/oss-security/2010/09/24/3, https://bugs.launchpad.net/zodb/+bug/135108

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2010-3494 | CVE-DB