From: Secunia Security Advisories (sec-advsecunia.com)
Date: Fri Oct 29 2010 - 21:33:07 CDT

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TITLE:
Python smtpd Module Two Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA41968

VERIFY ADVISORY:
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http://secunia.com/advisories/41968/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41968

RELEASE DATE:
2010-10-30

DISCUSS ADVISORY:
http://secunia.com/advisories/41968/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/41968/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=41968

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DESCRIPTION:
Two vulnerabilities have been reported in Python, which can be
exploited by malicious people to cause a DoS (Denial of Service).

1) A race condition within the "__init__()" method of the SMTPChannel
class when acquiring a peername can lead to an unexpected exception
being raised causing the process to crash.

2) An error within the "handle_accept()" method of the SMTPServer
class when accepting a connection can lead to unexpected exceptions
being raised or unexpected types being returned causing the process
to crash.

This vulnerability is related to:
SA41279

The vulnerabilities are reported in version 2.6, 2.7, 3.1, and 3.2.

SOLUTION:
Fixed in the SVN repository.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Python bug by Giampaolo Rodola.

ORIGINAL ADVISORY:
http://bugs.python.org/issue9129

OTHER REFERENCES:
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http://secunia.com/products/corporate/EVM/

DEEP LINKS:
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
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