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ASF GitHub Bot commented on CLOUDSTACK-9593: -------------------------------------------- blueorangutan commented on issue #1760: CLOUDSTACK-9593: userdata: enforce data is a multiple of 4 characters URL: https://github.com/apache/cloudstack/pull/1760#issuecomment-347540585 @rhtyd a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org > User data check is inconsistent with python > ------------------------------------------- > > Key: CLOUDSTACK-9593 > URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9593 > Project: CloudStack > Issue Type: Bug > Security Level: Public(Anyone can view this level - this is the > default.) > Affects Versions: 4.4.2, 4.4.3, 4.3.2, 4.5.1, 4.4.4, 4.5.2, 4.6.0, 4.6.1, > 4.6.2, 4.7.0, 4.7.1, 4.8.0, 4.9.0 > Reporter: Marc-Aurèle Brothier > Assignee: Marc-Aurèle Brothier > > The user data is validated through the Apache commons codec library, but this > library does not check that the length is a multiple of 4 characters. The RFC > does not require it either. But the python script in the virtual router that > loads the user data does check for the possible padding presence, requiring > the string to be a multiple of 4 characters. > {code:python} > >>> import base64 > >>> base64.b64decode('foo') > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File > "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/base64.py", > line 78, in b64decode > raise TypeError(msg) > TypeError: Incorrect padding > >>> base64.b64decode('foo=') > '~\x8a' > {code} > Currently since the java check is less restrictive, the user data gets saved > into the database but the VR script crashes when it receives this VM user > data. On a single VM it is not really a problem. The critical issue is when a > VR is restarted. The invalid pythonic base64 string makes the vmdata.py > script crashed, resulting in a VR not starting at all. -- This message was sent by Atlassian JIRA (v6.4.14#64029)