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Fix fork track (bnc#447564)
Fork tracking is broken by the kernel message for clone no longer supplying the child pid correctly. Instead the parent pid will be output with each message and the tools will fake a fork when they detect a previously unknow parent child relationship.
This commit is contained in:
John Johansen
parent
77caea2cc7
commit
39343c8675
1 changed files with 37 additions and 17 deletions
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@ -2234,11 +2234,11 @@ sub handlechildren {
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$sd{$profile}{$hat}{deny}{path}{$exec_target}{audit} |= 0;
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$changed{$profile} = 1;
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# skip all remaining events if they say to deny
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# the exec
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return if $domainchange eq "change";
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}
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# skip all remaining events if they say to deny
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# the exec
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return if $domainchange eq "change";
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}
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unless ($ans eq "CMD_DENY") {
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@ -2246,6 +2246,7 @@ sub handlechildren {
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if (defined $prelog{PERMITTING}{$profile}{$hat}{path}{$exec_target}) {
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# $exec_mode = $prelog{PERMITTING}{$profile}{$hat}{path}{$exec_target};
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}
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$prelog{PERMITTING}{$profile}{$hat}{path}{$exec_target} |= $exec_mode;
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$log{PERMITTING}{$profile} = {};
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$sd{$profile}{$hat}{allow}{path}{$exec_target}{mode} |= $exec_mode;
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@ -2374,7 +2375,7 @@ sub handlechildren {
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}
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sub add_to_tree ($@) {
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my ($pid, $type, @event) = @_;
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my ($pid, $parent, $type, @event) = @_;
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if ( $DEBUGGING ) {
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my $eventmsg = Data::Dumper->Dump([@event], [qw(*event)]);
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$eventmsg =~ s/\n/ /g;
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@ -2382,9 +2383,20 @@ sub add_to_tree ($@) {
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}
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unless (exists $pid{$pid}) {
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my $arrayref = [];
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push @log, $arrayref;
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$pid{$pid} = $arrayref;
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my $profile = $event[0];
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my $hat = $event[1];
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if ($parent && exists $pid{$parent}) {
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# fork entry is missing fake one so that fork tracking will work
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$hat ||= "null-complain-profile";
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my $arrayref = [];
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push @{ $pid{$parent} }, $arrayref;
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$pid{$pid} = $arrayref;
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push @{$arrayref}, [ "fork", $pid, $profile, $hat ];
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} else {
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my $arrayref = [];
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push @log, $arrayref;
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$pid{$pid} = $arrayref;
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}
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}
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push @{ $pid{$pid} }, [ $type, $pid, @event ];
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@ -2474,7 +2486,7 @@ sub parse_log_record_v_2_0 ($@) {
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if ( ($profile ne 'null-complain-profile')
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&& (!profile_exists($profile)));
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add_to_tree($pid, "unknown_hat", $profile, $hat,
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add_to_tree($pid, 0, "unknown_hat", $profile, $hat,
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"PERMITTING", $uhat);
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} elsif (m/LOGPROF-HINT (unknown_profile|missing_mandatory_profile) image=(.+) pid=(\d+) profile=(.+) active=(.+)/) {
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my ($image, $pid, $profile, $hat) = ($2, $3, $4, $5);
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@ -2489,7 +2501,7 @@ sub parse_log_record_v_2_0 ($@) {
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if ( ($profile ne 'null-complain-profile')
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&& (!profile_exists($profile)));
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add_to_tree($pid, "exec", $profile, $hat, "HINT", "PERMITTING", "x", $image);
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add_to_tree($pid, 0, "exec", $profile, $hat, "HINT", "PERMITTING", "x", $image);
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} elsif (m/(PERMITTING|REJECTING) (\S+) access (.+) \((.+)\((\d+)\) profile (.+) active (.+)\)/) {
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my ($sdmode, $mode, $detail, $prog, $pid, $profile, $hat) =
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@ -2555,10 +2567,10 @@ sub parse_log_record_v_2_0 ($@) {
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$detail =~ s/^to\s+//;
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if ($domainchange eq "change") {
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add_to_tree($pid, "exec", $profile, $hat, $prog,
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add_to_tree($pid, 0, "exec", $profile, $hat, $prog,
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$sdmode, str_to_mode($mode), $detail);
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} else {
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add_to_tree($pid, "path", $profile, $hat, $prog,
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add_to_tree($pid, 0, "path", $profile, $hat, $prog,
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$sdmode, str_to_mode($mode), $detail);
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}
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@ -2578,7 +2590,7 @@ sub parse_log_record_v_2_0 ($@) {
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if ( ($profile ne 'null-complain-profile')
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&& (!profile_exists($profile)));
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add_to_tree($pid, "path", $profile, $hat, $prog, $sdmode,
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add_to_tree($pid, 0, "path", $profile, $hat, $prog, $sdmode,
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"w", $path);
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} elsif (m/(PERMITTING|REJECTING) xattr (\S+) on (.+) \((.+)\((\d+)\) profile (.+) active (.+)\)/) {
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@ -2605,7 +2617,7 @@ sub parse_log_record_v_2_0 ($@) {
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}
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if ($xattrmode) {
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add_to_tree($pid, "path", $profile, $hat, $prog, $sdmode,
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add_to_tree($pid, 0, "path", $profile, $hat, $prog, $sdmode,
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str_to_mode($xattrmode), $path);
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}
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@ -2631,7 +2643,7 @@ sub parse_log_record_v_2_0 ($@) {
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# krb5.conf
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return $& if $path eq "/etc/krb5.conf";
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add_to_tree($pid, "path", $profile, $hat, $prog, $sdmode,
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add_to_tree($pid, 0, "path", $profile, $hat, $prog, $sdmode,
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str_to_mode("w"), $path);
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} elsif (m/(PERMITTING|REJECTING) access to capability '(\S+)' \((.+)\((\d+)\) profile (.+) active (.+)\)/) {
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@ -2649,7 +2661,7 @@ sub parse_log_record_v_2_0 ($@) {
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if ( ($profile ne 'null-complain-profile')
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&& (!profile_exists($profile)));
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add_to_tree($pid, "capability", $profile, $hat, $prog,
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add_to_tree($pid, 0, "capability", $profile, $hat, $prog,
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$sdmode, $capability);
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} elsif (m/Fork parent (\d+) child (\d+) profile (.+) active (.+)/
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@ -2733,6 +2745,7 @@ sub add_event_to_tree ($) {
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if ($e->{operation} eq "exec") {
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if ( defined $e->{info} && $e->{info} eq "mandatory profile missing" ) {
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add_to_tree( $e->{pid},
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$e->{parent},
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"exec",
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$profile,
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$hat,
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@ -2745,6 +2758,7 @@ sub add_event_to_tree ($) {
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}
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} elsif ($e->{operation} =~ m/file_/) {
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add_to_tree( $e->{pid},
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$e->{parent},
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"path",
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$profile,
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$hat,
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@ -2756,6 +2770,7 @@ sub add_event_to_tree ($) {
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);
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} elsif ($e->{operation} eq "capable") {
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add_to_tree( $e->{pid},
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$e->{parent},
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"capability",
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$profile,
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$hat,
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@ -2766,6 +2781,7 @@ sub add_event_to_tree ($) {
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} elsif ($e->{operation} =~ m/xattr/ ||
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$e->{operation} eq "setattr") {
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add_to_tree( $e->{pid},
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$e->{parent},
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"path",
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$profile,
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$hat,
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@ -2797,6 +2813,7 @@ sub add_event_to_tree ($) {
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if ($is_domain_change) {
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add_to_tree( $e->{pid},
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$e->{parent},
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"exec",
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$profile,
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$hat,
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@ -2808,6 +2825,7 @@ sub add_event_to_tree ($) {
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);
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} else {
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add_to_tree( $e->{pid},
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$e->{parent},
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"path",
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$profile,
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$hat,
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@ -2820,6 +2838,7 @@ sub add_event_to_tree ($) {
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}
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} elsif ($e->{operation} eq "sysctl") {
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add_to_tree( $e->{pid},
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$e->{parent},
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"path",
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$profile,
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$hat,
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@ -2834,7 +2853,7 @@ sub add_event_to_tree ($) {
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$profile ||= "null-complain-profile";
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$hat ||= "null-complain-profile";
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my $arrayref = [];
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if (exists $pid{$e->{pid}}) {
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if (exists $pid{$parent}) {
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push @{ $pid{$parent} }, $arrayref;
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} else {
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push @log, $arrayref;
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@ -2843,6 +2862,7 @@ sub add_event_to_tree ($) {
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push @{$arrayref}, [ "fork", $child, $profile, $hat ];
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} elsif ($e->{operation} =~ m/socket_/) {
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add_to_tree( $e->{pid},
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$e->{parent},
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"netdomain",
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$profile,
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$hat,
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@ -2853,7 +2873,7 @@ sub add_event_to_tree ($) {
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$e->{protocol},
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);
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} elsif ($e->{operation} eq "change_hat") {
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add_to_tree($e->{pid}, "unknown_hat", $profile, $hat, $sdmode, $hat);
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add_to_tree($e->{pid}, $e->{parent}, "unknown_hat", $profile, $hat, $sdmode, $hat);
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} else {
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if ( $DEBUGGING ) {
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my $msg = Data::Dumper->Dump([$e], [qw(*event)]);
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