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CVE-2010-3493

4.3 · MEDIUM

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 immediat…

Published Oct 19, 2010pythonCWE-362EPSS 2.80%

Overview

CVE-2010-3493 is a medium-severity vulnerability affecting python python. It was published on October 19, 2010 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from python. Update python to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refbugs.python.org/issue6706Refbugs.python.org/issue9129Reflists.opensuse.org/opensuse-security-announce/2010-12/msg00006.htmlReflists.opensuse.org/opensuse-security-announce/2011-01/msg00006.htmlRefsecunia.com/advisories/43068Refsecunia.com/advisories/50858Refsecunia.com/advisories/51024Refsecunia.com/advisories/51040Refsvn.python.org/view/python/branches/py3k/Lib/smtpd.py?r1=84289&r2=84288&pathrev=84289Refsvn.python.org/view?view=rev&revision=84289

How CyberStrike helps

Frequently asked questions

What is CVE-2010-3493?

CVE-2010-3493 is a medium-severity vulnerability affecting python python. It was published on October 19, 2010 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2010-3493?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2010-3493?

Check the references section for vendor advisories and patches from python. Update python to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2010-3493?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2010-3493 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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