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

Bin Hou binhou at cn.ibm.com
Tue Nov 12 03:14:44 UTC 2013


Jeremy,

      Could you put your comments and help me to understand what the
reasons are to resolve this bug as invalid?

Thanks
Bin

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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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