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logprof/genprof and related utilities in python. Because the branch that was worked on was not based on the apparmor tree, not all of the history can be maintained for files that are not newly created or entirely rewritten in the branch. (This merge also includes a subsequent commit to the branch I was merging from which includes my missed bzr add of utils/apparmor/translations.py)
176 lines
6.6 KiB
Text
176 lines
6.6 KiB
Text
# This publication is intellectual property of Novell Inc. and Canonical
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# Ltd. Its contents can be duplicated, either in part or in whole, provided
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# that a copyright label is visibly located on each copy.
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#
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# All information found in this book has been compiled with utmost
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# attention to detail. However, this does not guarantee complete accuracy.
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# Neither SUSE LINUX GmbH, Canonical Ltd, the authors, nor the translators
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# shall be held liable for possible errors or the consequences thereof.
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#
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# Many of the software and hardware descriptions cited in this book
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# are registered trademarks. All trade names are subject to copyright
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# restrictions and may be registered trade marks. SUSE LINUX GmbH
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# and Canonical Ltd. essentially adhere to the manufacturer's spelling.
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#
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# Names of products and trademarks appearing in this book (with or without
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# specific notation) are likewise subject to trademark and trade protection
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# laws and may thus fall under copyright restrictions.
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#
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=pod
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=head1 NAME
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aa-logprof - utility for updating AppArmor security profiles
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=head1 SYNOPSIS
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B<aa-logprof [I<-d /path/to/profiles>] [I<-f /path/to/logfile>] [I<-m E<lt>mark in logfileE<gt>>]>
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=head1 OPTIONS
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B<-d --dir /path/to/profiles>
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Specifies where to look for the AppArmor security profile set.
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Defaults to /etc/apparmor.d.
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B<-f --file /path/to/logfile>
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Specifies the location of logfile that contains AppArmor security events.
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Default locations are read from F</etc/apparmor/logprof.conf>.
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Typical defaults are:
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/var/log/audit/audit.log
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/var/log/syslog
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/var/log/messages
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B< -m --logmark "mark">
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aa-logprof will ignore all events in the system log before the
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specified mark is seen. If the mark contains spaces, it must
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be surrounded with quotes to work correctly.
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=head1 DESCRIPTION
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B<aa-logprof> is an interactive tool used to review AppArmor generated
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messages and update AppArmor security profiles.
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Running aa-logprof will scan the log file and if there are new AppArmor
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events that are not covered by the existing profile set, the user will
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be prompted with suggested modifications to augment the profile.
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When aa-logprof exits profile changes are saved to disk. If AppArmor is
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running, the updated profiles are reloaded and if any processes that
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generated AppArmor events are still running in the null-complain-profile,
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those processes are set to run under their proper profiles.
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=head2 Responding to AppArmor Events
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B<aa-logprof> will generate a list of suggested profile changes that
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the user can choose from, or they can create their own, to modifiy the
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permission set of the profile so that the generated access violation
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will not re-occur.
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The user is then presented with info about the access including profile,
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path, old mode if there was a previous entry in the profile for this path,
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new mode, the suggestion list, and given these options:
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(A)llow, (D)eny, (I)gnore, (N)ew, (G)lob last piece, (Q)uit
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If the AppArmor profile was in complain mode when the event was generated,
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the default for this option is (A)llow, otherwise, it's (D)eny.
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The (D)eny option adds a "deny" rule to the AppArmor profile, which
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silences logging.
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The (I)gnore option allows user to ignore the event, without making any
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changes to the AppArmor profile.
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The suggestion list is presented as a numbered list with includes
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at the top, the literal path in the middle, and the suggested globs
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at the bottom. If any globs are being suggested, the shortest glob
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is the selected option, otherwise, the literal path is selected.
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Picking includes from the list must be done manually.
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Hitting a numbered key will change the selected option to the
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corresponding numbered entry in the list.
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If the user selects (N)ew, they'll be prompted to enter their own globbed
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entry to match the path. If the user-entered glob does not match the
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path for this event, they'll be informed and have the option to fix it.
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If the user selects (G)lob last piece then, taking the currently selected
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option, aa-logprof will remove the last path element and replace it with /*.
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If the last path element already was /*, aa-logprof will go up a directory
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level and replace it with /**.
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This new globbed entry is then added to the suggestion list and marked
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as the selected option.
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So /usr/share/themes/foo/bar/baz.gif can be turned into
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/usr/share/themes/** by hitting "g" three times.
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If the user selects (A)llow, aa-logprof will take the current selection
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and add it to the profile, deleting other entries in the profile that
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are matched by the new entry.
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Adding r access to /usr/share/themes/** would delete an entry for r
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access to /usr/share/themes/foo/*.gif if it exists in the profile.
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If (Q)uit is selected at this point, aa-logprof will ignore all new pending
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accesses.
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After all of the accesses have been handled, logrof will write all
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updated profiles to the disk and reload them if AppArmor is running.
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=head2 New Process (Execution) Events
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If there are unhandled x accesses generated by the execve(2) of a
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new process, aa-logprof will display the parent profile and the target
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program that's being executed and prompt the user to select and execute
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modifier. These modifiers will allow a choice for the target to: have it's
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own profile (px), inherit the parent's profile (ix), run unconstrained
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(ux), or deny access for the target. See apparmor.d(5) for details.
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If there is a corresponding entry for the target in the qualifiers
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section of /etc/apparmor/logprof.conf, the presented list will contain only the
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allowed modes.
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The default option for this question is selected using this logic--
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# if px mode is allowed and profile exists for the target
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# px is default.
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# else if ix mode is allowed
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# ix is default
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# else
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# deny is default
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aa-logprof will never suggest "ux" as the default.
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=head2 ChangeHat Events
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If unknown aa_change_hat(2) events are found, the user is prompted to add a new
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hat, if the events should go into the default hat for this profile based
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on the corresponding entry in the defaulthat section of logprof.conf,
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or if the following events that run under that hat should be denied
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altogether.
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=head2 Capability Events
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If there are capability accesses, the user is shown each capability
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access and asked if the capability should be allowed, denied, or if the
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user wants to quit. See capability(7) for details.
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=head1 BUGS
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If you find any bugs, please report them at
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L<https://bugs.launchpad.net/apparmor/+filebug>.
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=head1 SEE ALSO
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klogd(8), auditd(8), apparmor(7), apparmor.d(5), aa_change_hat(2),
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logprof.conf(5), aa-genprof(1), aa-enforce(1), aa-complain(1),
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aa-disable(1), and L<http://wiki.apparmor.net>.
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=cut
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