2441 |
permissions (e.g. allow_env PATH if symlink.target="/"), it triggered |
permissions (e.g. allow_env PATH if symlink.target="/"), it triggered |
2442 |
NULL pointer dereference. |
NULL pointer dereference. |
2443 |
|
|
2444 |
Fix 2010/07/29 |
Fix 2010/10/25 |
2445 |
|
|
2446 |
@ Change keyword syntax. |
@ Fix umount() pathname calculation. |
2447 |
|
|
2448 |
|
"mount --bind /path/to/file1 /path/to/file2" is legal. |
2449 |
|
Therefore, "umount /path/to/file2" is also legal. |
2450 |
|
Do not automatically append trailing '/' if pathname to be unmounted |
2451 |
|
does not end with '/'. |
2452 |
|
|
2453 |
|
@ Change directives. |
2454 |
|
|
2455 |
I removed "allow_" prefix from directives. New directives for files are |
I removed "allow_" prefix from directives. New directives for files are |
2456 |
prefixed with "file ". For example, "allow_read" changed to "file read", |
prefixed with "file ". For example, "allow_read" changed to "file read", |
2457 |
"allow_ioctl" changed to "file ioctl". New directive for "allow_network" |
"allow_ioctl" changed to "file ioctl". New directive for "allow_network |
2458 |
is "network". New directive for "allow_env" is "misc env". New directive |
TCP" is "network inet stream", "allow_network UDP" is "network inet |
2459 |
for "allow_signal" is "ipc signal". New directive for "allow_capability" |
dgram", "allow_network RAW" is "network inet raw". New directive for |
2460 |
is "capability". These directives correspond with keywords used by |
"allow_env" is "misc env". New directive for "allow_signal" is "ipc |
2461 |
profile's CONFIG lines. |
signal". New directive for "allow_capability" is "capability". These new |
2462 |
|
directives correspond with keywords used by profile's CONFIG lines. |
2463 |
|
|
2464 |
I removed "deny_rewrite" and "allow_rewrite" directives and introduced |
I removed "deny_rewrite" and "allow_rewrite" directives and introduced |
2465 |
"file append" directive. Thus, permission for open(O_WRONLY | O_APPEND) |
"file append" directive. Thus, permission for open(O_WRONLY | O_APPEND) |
2475 |
check requires hooks in filesystem part while almost all hooks for |
check requires hooks in filesystem part while almost all hooks for |
2476 |
filesystem part have moved to LSM by Linux 2.6.34. |
filesystem part have moved to LSM by Linux 2.6.34. |
2477 |
|
|
2478 |
@ Distinguish send() and recv() operations for UDP and IP protocols. |
New directive for "execute_handler" is "task auto_execute_handler", |
2479 |
|
"denied_execute_handler" is "task denied_execute_handler". |
2480 |
|
|
2481 |
Until now, it was impossible for UDP and IP protocols to allow either |
@ Distinguish send() and recv() operations. |
2482 |
|
|
2483 |
|
Until now, it was impossible for UDP and IP sockets to allow either |
2484 |
only sending or only receiving because permissions were aggregated with |
only sending or only receiving because permissions were aggregated with |
2485 |
"connect" keyword. I broke "connect" keyword into "send" and "recv" |
"connect" keyword. I broke "connect" keyword into "send" and "recv" |
2486 |
keywords so that you can keep access control for send() operation enabled |
keywords so that you can keep access control for send() operation enabled |
2487 |
when you have to turn access control for recv() operation off due to |
when you have to disable access control for recv() operation due to |
2488 |
application breakage by filtering incoming datagram. |
application breakage by discarding incoming datagram. |
2489 |
|
|
2490 |
@ Wait for next connection/datagram if current connection/datagram was |
@ Add Unix domain socket restriction support. |
|
discarded. |
|
2491 |
|
|
2492 |
Regarding "network TCP accept", "network UDP recv", "network RAW recv" |
Until now, it was possible to restrict only inet domain sockets (i.e. |
2493 |
keywords, I modified to wait for next connection/datagram if current |
TCP/UDP/RAW). I added restriction for Unix domain sockets (i.e. stream/ |
2494 |
connection/datagram was discarded. LSM hooks for these keywords are |
dgram/seqpacket). New directive "network unix" is added as well as |
2495 |
currently missing because this behavior may break applications. |
"network inet" directive. |
|
If you found applications broken by this behavior, you can set |
|
|
CONFIG::network::inet_tcp_accept and/or CONFIG::network::inet_udp_recv |
|
|
and/or CONFIG::network::inet_raw_recv to mode=disabled in order to |
|
|
disable filtering for incoming connection/datagram. |
|
2496 |
|
|
2497 |
@ Allow specifying multiple permissions in a line. |
@ Allow specifying multiple permissions in a line. |
2498 |
|
|
2531 |
|
|
2532 |
@ Add a new keyword "any" for domain transition control. |
@ Add a new keyword "any" for domain transition control. |
2533 |
|
|
2534 |
To be able to make it easier to apply execute_handler on each domain, |
To be able to make it easier to apply auto_execute_handler on each |
2535 |
I added "any" keyword to domain transition control keywords. Now, |
domain, I added "any" keyword to domain transition control keywords. Now, |
2536 |
"initialize_domain /usr/sbin/sshd" changed to |
"initialize_domain /usr/sbin/sshd" changed to |
2537 |
"initialize_domain /usr/sbin/sshd from any" and |
"initialize_domain /usr/sbin/sshd from any" and |
2538 |
"keep_domain <kernel> /usr/sbin/sshd /bin/bash" changed to |
"keep_domain <kernel> /usr/sbin/sshd /bin/bash" changed to |
2539 |
"keep_domain any from <kernel> /usr/sbin/sshd /bin/bash". |
"keep_domain any from <kernel> /usr/sbin/sshd /bin/bash". |
2540 |
|
|
2541 |
"keep_domain /path/to/execute_handler from any" will allow you to apply |
"keep_domain /path/to/auto_execute_handler from any" will allow you to |
2542 |
execute_handler for any domains without creating domains for |
apply auto_execute_handler for any domains without creating domains for |
2543 |
execute_handler. |
auto_execute_handler. |
2544 |
|
|
2545 |
@ Change buffering mode for reading policy. |
@ Change buffering mode for reading policy. |
2546 |
|
|
2561 |
the exception policy and specify "use_group 0" from the domains in the |
the exception policy and specify "use_group 0" from the domains in the |
2562 |
domain policy. |
domain policy. |
2563 |
|
|
2564 |
"ignore_global_allow_read" and "ignore_global_allow_env" keywords were |
"ignore_global_allow_read" and "ignore_global_allow_env" directives were |
2565 |
removed from domain policy and "use_group" keyword was added. |
removed from domain policy and "use_group" keyword was added. |
2566 |
|
|
2567 |
|
@ Remove "if" and "; set" keyword. |
2568 |
|
|
2569 |
|
I removed need for specifying these keyword. |
2570 |
|
You can simply specify like below. |
2571 |
|
|
2572 |
|
file read /etc/shadow task.uid=0 |
2573 |
|
|
2574 |
|
@ Remove "file_pattern" keyword. |
2575 |
|
|
2576 |
|
I removed "file_pattern" keyword because it is impossible to predefine |
2577 |
|
all possible pathname patterns. Also, learning pathnames using incomplete |
2578 |
|
patterns makes it difficult to later replace using "path_group" keyword. |
2579 |
|
|
2580 |
|
@ Replace verbose= parameter with statistic interface. |
2581 |
|
|
2582 |
|
Since it is noisy if a lot of policy violation messages are printed, |
2583 |
|
I removed printk(). To be able to check whether policy violation occurred |
2584 |
|
or not, I introduced /proc/ccs/stat interface which counts number of |
2585 |
|
policy violations occurred. You can firstly check /proc/ccs/stat and then |
2586 |
|
check /proc/ccs/reject_log . |
2587 |
|
|
2588 |
|
@ Remove global preference. |
2589 |
|
|
2590 |
|
I removed global preference in order to make code simpler. |
2591 |
|
|
2592 |
@ Allow controlling generation of access granted logs for per an entry |
@ Allow controlling generation of access granted logs for per an entry |
2593 |
basis. |
basis. |
2594 |
|
|
2595 |
I added per-entry flag which controls generation of grant logs because |
I added per-entry flag which controls generation of grant logs because |
2596 |
Xen and KVM issues ioctl requests so frequently. For example, |
Xen and KVM issues ioctl requests so frequently. For example, |
2597 |
|
|
2598 |
file ioctl /dev/null 0x5401 ; set audit=no |
file ioctl /dev/null 0x5401 grant_log=no |
2599 |
|
|
2600 |
will suppress /proc/ccs/grant_log even if profile says grant_log=yes . |
will suppress /proc/ccs/grant_log even if preference says grant_log=yes . |
2601 |
|
|
2602 |
file ioctl /dev/null 0x5401 ; set audit=yes |
file ioctl /dev/null 0x5401 grant_log=yes |
2603 |
|
|
2604 |
will generate /proc/ccs/grant_log even if profile says grant_log=no . |
will generate /proc/ccs/grant_log even if preference says grant_log=no . |
2605 |
|
|
2606 |
file ioctl /dev/null 0x5401 |
file ioctl /dev/null 0x5401 |
2607 |
|
|
2608 |
will generate /proc/ccs/grant_log only if profile says grant_log=yes . |
will generate /proc/ccs/grant_log only if preference says grant_log=yes . |
2609 |
|
|
2610 |
This flag is intended for frequently accessed resources like |
This flag is intended for frequently accessed resources like |
2611 |
|
|
2612 |
file read /var/www/html/\{\*\}/\*.html ; set audit=no |
file read /var/www/html/\{\*\}/\*.html grant_log=no |
2613 |
|
|
2614 |
. |
. |
2615 |
|
|
2616 |
|
@ Automatically create domain by execve() even if enforcing mode. |
2617 |
|
|
2618 |
|
Until now, new domains are not created if the domain was not defined and |
2619 |
|
current domain is enforcing mode ("CONFIG::file::execute=enforcing"). |
2620 |
|
|
2621 |
|
To be able to restrict shell session without using "keep_domain", |
2622 |
|
I changed to create new domains automatically even if current domain is |
2623 |
|
enforcing mode. |
2624 |
|
|
2625 |
|
@ Replace "task.state" with "auto_domain_transition". |
2626 |
|
|
2627 |
|
task.state is difficult to use. Thus, I replaced task.state with |
2628 |
|
auto_domain_transition which performs domain transition instead of |
2629 |
|
changing current process's state variables. |
2630 |
|
|
2631 |
|
If domain transition failed, current process will be killed by SIGKILL |
2632 |
|
signal. This should not happen in normal circumstances, for you know the |
2633 |
|
domain to transit to and thereby you will define the domain beforehand |
2634 |
|
when you use "auto_domain_transition" keyword. |
2635 |
|
|
2636 |
|
@ Replace "allow_transit" with "task manual_domain_transition". |
2637 |
|
|
2638 |
|
I changed this directive to specify absolute domainname (e.g. |
2639 |
|
"<kernel> /usr/sbin/httpd //app=cgi1\040id=10000") rather than virtual |
2640 |
|
pathname (e.g. "//app=cgi1\040id=10000") because you know the domain to |
2641 |
|
transit to and thereby you will define the domain beforehand when you use |
2642 |
|
"task manual_domain_transition" directive. |
2643 |
|
|
2644 |
|
This change allows you to jump to arbitrary domain. |
2645 |
|
|
2646 |
|
@ Add "task auto_domain_transition". |
2647 |
|
|
2648 |
|
This is similar to "task manual_domain_transition", but is automatically |
2649 |
|
applied whenever conditions are met. For example, |
2650 |
|
|
2651 |
|
task auto_domain_transition <kernel> //./non-root task.uid!=0 |
2652 |
|
|
2653 |
|
will automatically jump to "<kernel> //./non-root" domain if current |
2654 |
|
process's UID is not 0 whereas |
2655 |
|
|
2656 |
|
task manual_domain_transition <kernel> //./non-root task.uid!=0 |
2657 |
|
|
2658 |
|
will jump to "<kernel> //./non-root" domain if current process's UID is |
2659 |
|
not 0 and current process wrote "<kernel> //./non-root" + '\n' to |
2660 |
|
/proc/ccs/.transition interface. |
2661 |
|
|
2662 |
|
If domain transition failed, current process will be killed by SIGKILL |
2663 |
|
signal. |
2664 |
|
|
2665 |
@ Optimize for object's size. |
@ Optimize for object's size. |
2666 |
|
|
2667 |
I merged similar code in order to reduce object's filesize. |
I merged similar code in order to reduce object's filesize. |
2668 |
|
|
2669 |
|
Version 1.8.0 2010/XX/XX Feature enhancement release. |