CVE-2010-3493

MEDIUM 4.3CVE-2010-3493 · Published 19/10/2010 · updated 16/06/2026

Package	Affected versions	Patched versions
python python	`= 3.1= 3.2`	No fix yet

Description

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.

References

bugs.python.org/issue6706 · Patch
bugs.python.org/issue9129 · Patch
lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
secunia.com/advisories/43068
secunia.com/advisories/50858
secunia.com/advisories/51024
secunia.com/advisories/51040
svn.python.org/view/python/branches/py3k/Lib/smtpd.py · Patch
svn.python.org/view
mandriva.com/security/advisories
mandriva.com/security/advisories
openwall.com/lists/oss-security/2010/09/09/6
openwall.com/lists/oss-security/2010/09/11/2
openwall.com/lists/oss-security/2010/09/22/3
openwall.com/lists/oss-security/2010/09/24/3
securityfocus.com/bid/44533
ubuntu.com/usn/USN-1596-1
ubuntu.com/usn/USN-1613-1
ubuntu.com/usn/USN-1613-2
vupen.com/english/advisories/2011/0212
bugs.launchpad.net/zodb/+bug/135108
bugzilla.redhat.com/show_bug.cgi
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12210

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