diff options
Diffstat (limited to 'Mailman/Cgi/private.py')
| -rw-r--r-- | Mailman/Cgi/private.py | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/Mailman/Cgi/private.py b/Mailman/Cgi/private.py index 790d351c6..cbab3b066 100644 --- a/Mailman/Cgi/private.py +++ b/Mailman/Cgi/private.py @@ -1,4 +1,4 @@ -# Copyright (C) 1998-2003 by the Free Software Foundation, Inc. +# Copyright (C) 1998-2005 by the Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License @@ -35,13 +35,16 @@ from Mailman.Logging.Syslog import syslog _ = i18n._ i18n.set_language(mm_cfg.DEFAULT_SERVER_LANGUAGE) +SLASH = '/' + def true_path(path): "Ensure that the path is safe by removing .." - path = path.replace('../', '') - path = path.replace('./', '') - return path[1:] + # Workaround for path traverse vulnerability. Unsuccessful attempts will + # be logged in logs/error. + parts = [x for x in path.split(SLASH) if x not in ('.', '..')] + return SLASH.join(parts)[1:] |