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[Bug 1246159] Re: seed method brings potential security issue

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Jeremy Stanley <fungi@xxxxxxxxxxx>
Date: Tue, 12 Nov 2013 01:44:40 -0000
Reply-to: Bug 1246159 <1246159@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Information type changed from Private Security to Public

** Changed in: ossa
       Status: Incomplete => Invalid

** Tags added: security

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https://bugs.launchpad.net/bugs/1246159

Title:
  seed method brings potential security issue

Status in OpenStack Compute (Nova):
  New
Status in OpenStack Security Advisories:
  Invalid

Bug description:
  In the /cinder/transfer/apil.py, line 86, the source code is below

             random.seed(datetime.datetime.now().microsecond)

  This code is using seed method to generate a random number, Standard
  random number generators should not be used to generate randomness
  used for security reasons. For security sensitive randomness a
  crytographic randomness generator that provides sufficient entropy
  should be used.

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