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Known bugs in sudo version 1.6.9
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1) Sudo should have an option to log when removing "dangerous"
environment variables.
2) On DUNIX in sia mode, hitting return at the prompt does not quit.
3) In parse.lex, '@' should not need to be a special character.
However, because lex does greedy matching, {WORD} will match
instead of the "^Defaults[:@]?" line.
4) In list mode (sudo -l), characters escaped with a backslash
are shown verbatim with the backslash.
5) Because the parser only does a single pass it is possible to
make a sudoers file where the "defaults" options are set after
a user's entry has been validated, changing the permissions for
the user. The work-around is to put all 'defaults' entries
before the "User privilege specification" section but after all
the "alias specifications". In the future the parser will
converted to a two-pass parser.
6) For the same reason as #5, changing the value of "ignore_dot" has
no effect (find_path() is called before sudoers is parsed).
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