87 lines
3.9 KiB
Diff
87 lines
3.9 KiB
Diff
diff --git a/plugins/sudoers/sudoers.in b/plugins/sudoers/sudoers.in
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index 5efda5d..e757da4 100644
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--- a/plugins/sudoers/sudoers.in
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+++ b/plugins/sudoers/sudoers.in
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@@ -32,32 +32,23 @@
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##
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## Defaults specification
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##
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-## You may wish to keep some of the following environment variables
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-## when running commands via sudo.
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-##
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-## Locale settings
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-# Defaults env_keep += "LANG LANGUAGE LINGUAS LC_* _XKB_CHARSET"
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-##
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-## Run X applications through sudo; HOME is used to find the
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-## .Xauthority file. Note that other programs use HOME to find
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-## configuration files and this may lead to privilege escalation!
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-# Defaults env_keep += "HOME"
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-##
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-## X11 resource path settings
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-# Defaults env_keep += "XAPPLRESDIR XFILESEARCHPATH XUSERFILESEARCHPATH"
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-##
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-## Desktop path settings
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-# Defaults env_keep += "QTDIR KDEDIR"
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-##
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-## Allow sudo-run commands to inherit the callers' ConsoleKit session
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-# Defaults env_keep += "XDG_SESSION_COOKIE"
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-##
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-## Uncomment to enable special input methods. Care should be taken as
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-## this may allow users to subvert the command being run via sudo.
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-# Defaults env_keep += "XMODIFIERS GTK_IM_MODULE QT_IM_MODULE QT_IM_SWITCHER"
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-##
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-## Uncomment to use a hard-coded PATH instead of the user's to find commands
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-# Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
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+## Prevent environment variables from influencing programs in an
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+## unexpected or harmful way (CVE-2005-2959, CVE-2005-4158, CVE-2006-0151)
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+Defaults always_set_home
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+Defaults env_reset
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+## Change env_reset to !env_reset in previous line to keep all environment variables
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+## Following list will no longer be necessary after this change
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+Defaults env_keep = "LANG LC_ADDRESS LC_CTYPE LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE LC_TIME LC_ALL LANGUAGE LINGUAS XDG_SESSION_COOKIE"
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+## Comment out the preceding line and uncomment the following one if you need
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+## to use special input methods. This may allow users to compromise the root
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+## account if they are allowed to run commands without authentication.
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+#Defaults env_keep = "LANG LC_ADDRESS LC_CTYPE LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE LC_TIME LC_ALL LANGUAGE LINGUAS XDG_SESSION_COOKIE XMODIFIERS GTK_IM_MODULE QT_IM_MODULE QT_IM_SWITCHER"
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+
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+## Do not insult users when they enter an incorrect password.
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+Defaults !insults
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+
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+## Use this PATH instead of the user's to find commands.
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+Defaults secure_path="/usr/sbin:/usr/bin:/sbin:/bin"
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##
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## Uncomment to send mail if the user does not enter the correct password.
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# Defaults mail_badpass
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@@ -68,10 +59,16 @@
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## Set maxseq to a smaller number if you don't have unlimited disk space.
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# Defaults log_output
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# Defaults!/usr/bin/sudoreplay !log_output
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-# Defaults!/usr/local/bin/sudoreplay !log_output
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# Defaults!REBOOT !log_output
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# Defaults maxseq = 1000
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+## In the default (unconfigured) configuration, sudo asks for the root password.
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+## This allows use of an ordinary user account for administration of a freshly
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+## installed system. When configuring sudo, delete the two
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+## following lines:
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+Defaults targetpw # ask for the password of the target user i.e. root
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+ALL ALL=(ALL) ALL # WARNING! Only use this together with 'Defaults targetpw'!
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+
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##
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## Runas alias specification
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##
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@@ -87,13 +84,5 @@ root ALL=(ALL:ALL) ALL
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## Same thing without a password
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# %wheel ALL=(ALL:ALL) NOPASSWD: ALL
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-## Uncomment to allow members of group sudo to execute any command
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-# %sudo ALL=(ALL:ALL) ALL
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-
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-## Uncomment to allow any user to run sudo if they know the password
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-## of the user they are running the command as (root by default).
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-# Defaults targetpw # Ask for the password of the target user
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-# ALL ALL=(ALL:ALL) ALL # WARNING: only use this together with 'Defaults targetpw'
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-
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## Read drop-in files from @sysconfdir@/sudoers.d
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@includedir @sysconfdir@/sudoers.d
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