[Bug 1754516] [NEW] config_list can set invalid values and break lists.

Mark Sapiro mark at msapiro.net
Thu Mar 8 18:37:21 EST 2018

Public bug reported:

config_list can set list attributes to invalid values. For example, the
list's topics attribute is a list of 4-tuples. it is possible with
config_list to set topics to, e.g., a string or a list of strings. Doing
this will cause Mailman.MailList.CheckValues() to throw a ValueError.
This is a serious issue as it breaks everything that tries to
instantiate all lists such as the listinfo overview.

I'm not going to attempt to fix this in config_list, but I will fix
CheckValues() to not throw the uncaught ValueError() if topics is not a
list of 4-tuples.

** Affects: mailman
     Importance: High
     Assignee: Mark Sapiro (msapiro)
         Status: In Progress

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  config_list can set invalid values and break lists.

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