sudoers now supports an APPARMOR_PROFILE option, which can be specified
as e.g.
alice ALL=(ALL:ALL) APPARMOR_PROFILE=foo ALL
The line above says "user alice can run any command as any user/group,
under confinement by the AppArmor profile 'foo'." Profiles can be
specified in any way that complies with the rules of
aa_change_profile(2). For instance, the sudoers configuration
alice ALL=(ALL:ALL) APPARMOR_PROFILE=unconfined ALL
allows alice to run any command unconfined (i.e., without an AppArmor
profile), while
alice ALL=(ALL:ALL) APPARMOR_PROFILE=foo//&bar ALL
tells sudoers that alice can run any command under the stacked AppArmor
profiles 'foo' and 'bar'.
The intention of this option is to give sysadmins on Linux distros
supporting AppArmor better options for fine-grained access control.
Among other things, this option can enforce mandatory access control
(MAC) over the operations that a privileged user is able to perform to
ensure that they cannot privesc past the boundaries of a specified
profile. It can also be used to limit which users are able to get
unconfined system access, by enforcing a default AppArmor profile on all
users and then specifying 'APPARMOR_PROFILE=unconfined' for a privileged
subset of users.
This causes "intercept" to be set to true in command_info[] which
the sudo front-end will use to determine whether or not to intercept
attempts to run further commands, such as from a shell. Also add
"log_children" which will use the same mechanism but only log (audit)
further commands.
Previously we needed to include headers required by the various
sudo*h files. Now those files are more self-sufficient and we
should only include headers needed by code in the various .c files.
1) don't assume snprintf() returns -1 on error, check for <0
2) when comparing return value of sizeof(foo), cast the sizeof, not the len
3) cast return value to void in cases where snprintf cannot fail
o The parse tree is now passed to the alias, match and defaults functions.
o The nss API has been changed so that the nss parse() function returns
a pointer to a struct sudoers_parse_tree which will be filled in
by the getdefs() and query() functions.
