Unrated severityNVD Advisory· Published Oct 19, 2010· Updated Jun 16, 2026
CVE-2010-3493
CVE-2010-3493
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:*
- (no CPE)range: 2.6, 2.7, 3.1, 3.2-alpha
- Range: 2.6, 2.7, 3.1, 3.2-alpha
Patches
Vulnerability mechanics
References
24- bugs.python.org/issue6706nvdPatchVendor Advisory
- bugs.python.org/issue9129nvdPatchVendor Advisory
- svn.python.org/view/python/branches/py3k/Lib/smtpd.pynvdPatch
- lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.htmlnvd
- secunia.com/advisories/43068nvd
- secunia.com/advisories/50858nvd
- secunia.com/advisories/51024nvd
- secunia.com/advisories/51040nvd
- svn.python.org/viewnvd
- www.mandriva.com/security/advisoriesnvd
- www.mandriva.com/security/advisoriesnvd
- www.openwall.com/lists/oss-security/2010/09/09/6nvd
- www.openwall.com/lists/oss-security/2010/09/11/2nvd
- www.openwall.com/lists/oss-security/2010/09/22/3nvd
- www.openwall.com/lists/oss-security/2010/09/24/3nvd
- www.securityfocus.com/bid/44533nvd
- www.ubuntu.com/usn/USN-1596-1nvd
- www.ubuntu.com/usn/USN-1613-1nvd
- www.ubuntu.com/usn/USN-1613-2nvd
- www.vupen.com/english/advisories/2011/0212nvd
- bugs.launchpad.net/zodb/+bug/135108nvd
- bugzilla.redhat.com/show_bug.cginvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12210nvd
News mentions
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