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    CVE-2010-3493

    Multiple race conditions in smtpd.py in the smtpd module in Python 2.6, 2.7, 3.1, and 3.2 alpha allow 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, an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, or the getpeername function having an ENOTCONN error, a related issue to CVE-2010-3492.

    Published:Jun 30, 2010
    Last Modified:Apr 11, 2025
    EPS:Oct 19, 2010
    EPSS Score:0.00789
    CVSS Score:4.3

    Affected Products

    Vendor
    Python
    Product
    Python
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

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    References

    http://bugs.python.org/issue6706
    http://bugs.python.org/issue9129
    http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
    http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
    http://secunia.com/advisories/43068
    http://secunia.com/advisories/50858
    http://secunia.com/advisories/51024
    http://secunia.com/advisories/51040
    http://svn.python.org/view/python/branches/py3k/Lib/smtpd.py?r1=84289&r2=84288&pathrev=84289
    http://svn.python.org/view?view=rev&revision=84289
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:215
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:216
    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
    http://www.securityfocus.com/bid/44533
    http://www.ubuntu.com/usn/USN-1596-1
    http://www.ubuntu.com/usn/USN-1613-1
    http://www.ubuntu.com/usn/USN-1613-2
    http://www.vupen.com/english/advisories/2011/0212
    https://bugs.launchpad.net/zodb/+bug/135108
    https://bugzilla.redhat.com/show_bug.cgi?id=632200
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12210
    http://bugs.python.org/issue6706
    http://bugs.python.org/issue9129
    http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
    http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
    http://secunia.com/advisories/43068
    http://secunia.com/advisories/50858
    http://secunia.com/advisories/51024
    http://secunia.com/advisories/51040
    http://svn.python.org/view/python/branches/py3k/Lib/smtpd.py?r1=84289&r2=84288&pathrev=84289
    http://svn.python.org/view?view=rev&revision=84289
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:215
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:216
    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
    http://www.securityfocus.com/bid/44533
    http://www.ubuntu.com/usn/USN-1596-1
    http://www.ubuntu.com/usn/USN-1613-1
    http://www.ubuntu.com/usn/USN-1613-2
    http://www.vupen.com/english/advisories/2011/0212
    https://bugs.launchpad.net/zodb/+bug/135108
    https://bugzilla.redhat.com/show_bug.cgi?id=632200
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12210

    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