New submission from John Zimmerman <johzi...@cisco.com>:

Python's socket module as included in Ubuntu Lucid (python version 2.6.5) does 
not correctly handle and exclude malformed UDP packets. This means that UDP 
listening programs written in python on this version are susceptible to 
malformed-UDP-packet based DoS attacks which cause severe CPU spikes in the 
python process. The spikes to recover once the attacks cease. If malformed UDP 
packets are properly identified in the library and excluded this will protect 
all UDP listening software written in python and using the standard sockets 
module from similar attacks. Currently all such software is vulnerable to such 
attacks.

----------
components: Library (Lib)
messages: 152103
nosy: johzimme
priority: normal
severity: normal
status: open
title: CPU DoS With Python's socket module
type: security
versions: Python 2.6

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue13891>
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