| 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 2010/09/01 |
| 2445 |
|
|
| 2446 |
@ Change keyword syntax. |
@ Change directives. |
| 2447 |
|
|
| 2448 |
I removed "allow_" prefix from directives. New directives for files are |
I removed "allow_" prefix from directives. New directives for files are |
| 2449 |
prefixed with "file ". For example, "allow_read" changed to "file read", |
prefixed with "file ". For example, "allow_read" changed to "file read", |
| 2450 |
"allow_ioctl" changed to "file ioctl". New directive for "allow_network" |
"allow_ioctl" changed to "file ioctl". New directive for "allow_network |
| 2451 |
is "network". New directive for "allow_env" is "misc env". New directive |
TCP" is "network inet stream", "allow_network UDP" is "network inet |
| 2452 |
for "allow_signal" is "ipc signal". New directive for "allow_capability" |
dgram", "allow_network RAW" is "network inet raw". New directive for |
| 2453 |
is "capability". These directives correspond with keywords used by |
"allow_env" is "misc env". New directive for "allow_signal" is "ipc |
| 2454 |
profile's CONFIG lines. |
signal". New directive for "allow_capability" is "capability". These new |
| 2455 |
|
directives correspond with keywords used by profile's CONFIG lines. |
| 2456 |
|
|
| 2457 |
I removed "deny_rewrite" and "allow_rewrite" directives and introduced |
I removed "deny_rewrite" and "allow_rewrite" directives and introduced |
| 2458 |
"file append" directive. Thus, permission for open(O_WRONLY | O_APPEND) |
"file append" directive. Thus, permission for open(O_WRONLY | O_APPEND) |
| 2468 |
check requires hooks in filesystem part while almost all hooks for |
check requires hooks in filesystem part while almost all hooks for |
| 2469 |
filesystem part have moved to LSM by Linux 2.6.34. |
filesystem part have moved to LSM by Linux 2.6.34. |
| 2470 |
|
|
| 2471 |
@ Distinguish send() and recv() operations for UDP and IP protocols. |
New directive for "execute_handler" is "task auto_execute_handler", |
| 2472 |
|
"denied_execute_handler" is "task denied_execute_handler". |
| 2473 |
|
|
| 2474 |
Until now, it was impossible for UDP and IP protocols to allow either |
@ Distinguish send() and recv() operations. |
| 2475 |
|
|
| 2476 |
|
Until now, it was impossible for UDP and IP sockets to allow either |
| 2477 |
only sending or only receiving because permissions were aggregated with |
only sending or only receiving because permissions were aggregated with |
| 2478 |
"connect" keyword. I broke "connect" keyword into "send" and "recv" |
"connect" keyword. I broke "connect" keyword into "send" and "recv" |
| 2479 |
keywords so that you can keep access control for send() operation enabled |
keywords so that you can keep access control for send() operation enabled |
| 2480 |
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 |
| 2481 |
application breakage by filtering incoming datagram. |
application breakage by discarding incoming datagram. |
| 2482 |
|
|
| 2483 |
@ Wait for next connection/datagram if current connection/datagram was |
@ Wait for next connection/datagram if current connection/datagram was |
| 2484 |
discarded. |
discarded. |
| 2485 |
|
|
| 2486 |
Regarding "network TCP accept", "network UDP recv", "network RAW recv" |
Regarding "network inet stream accept", "network inet dgram recv", |
| 2487 |
keywords, I modified to wait for next connection/datagram if current |
"network inet raw recv" directives, I modified to wait for next |
| 2488 |
connection/datagram was discarded. LSM hooks for these keywords are |
connection/datagram if current connection/datagram was discarded. |
| 2489 |
currently missing because this behavior may break applications. |
LSM hooks for these directives are currently missing because this |
| 2490 |
If you found applications broken by this behavior, you can set |
behavior may break applications. If you found applications broken by |
| 2491 |
CONFIG::network::inet_tcp_accept and/or CONFIG::network::inet_udp_recv |
this behavior, you can set CONFIG::network::inet_stream_accept and/or |
| 2492 |
and/or CONFIG::network::inet_raw_recv to mode=disabled in order to |
CONFIG::network::inet_dgram_recv and/or CONFIG::network::inet_raw_recv |
| 2493 |
disable filtering for incoming connection/datagram. |
to mode=disabled in order to only disable filtering for incoming |
| 2494 |
|
connection/datagram. |
| 2495 |
|
|
| 2496 |
|
@ Add Unix domain socket restriction support. |
| 2497 |
|
|
| 2498 |
|
Until now, it was possible to restrict only inet domain sockets (i.e. |
| 2499 |
|
TCP/UDP/RAW). I added restriction for Unix domain sockets (i.e. stream/ |
| 2500 |
|
dgram/seqpacket). New directive "network unix" is added as well as |
| 2501 |
|
"network inet" directive. |
| 2502 |
|
|
| 2503 |
@ Allow specifying multiple permissions in a line. |
@ Allow specifying multiple permissions in a line. |
| 2504 |
|
|
| 2537 |
|
|
| 2538 |
@ Add a new keyword "any" for domain transition control. |
@ Add a new keyword "any" for domain transition control. |
| 2539 |
|
|
| 2540 |
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 |
| 2541 |
I added "any" keyword to domain transition control keywords. Now, |
domain, I added "any" keyword to domain transition control keywords. Now, |
| 2542 |
"initialize_domain /usr/sbin/sshd" changed to |
"initialize_domain /usr/sbin/sshd" changed to |
| 2543 |
"initialize_domain /usr/sbin/sshd from any" and |
"initialize_domain /usr/sbin/sshd from any" and |
| 2544 |
"keep_domain <kernel> /usr/sbin/sshd /bin/bash" changed to |
"keep_domain <kernel> /usr/sbin/sshd /bin/bash" changed to |
| 2545 |
"keep_domain any from <kernel> /usr/sbin/sshd /bin/bash". |
"keep_domain any from <kernel> /usr/sbin/sshd /bin/bash". |
| 2546 |
|
|
| 2547 |
"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 |
| 2548 |
execute_handler for any domains without creating domains for |
apply auto_execute_handler for any domains without creating domains for |
| 2549 |
execute_handler. |
auto_execute_handler. |
| 2550 |
|
|
| 2551 |
@ Change buffering mode for reading policy. |
@ Change buffering mode for reading policy. |
| 2552 |
|
|
| 2567 |
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 |
| 2568 |
domain policy. |
domain policy. |
| 2569 |
|
|
| 2570 |
"ignore_global_allow_read" and "ignore_global_allow_env" keywords were |
"ignore_global_allow_read" and "ignore_global_allow_env" directives were |
| 2571 |
removed from domain policy and "use_group" keyword was added. |
removed from domain policy and "use_group" keyword was added. |
| 2572 |
|
|
| 2573 |
|
@ Remove "if" and "; set" keyword. |
| 2574 |
|
|
| 2575 |
|
I removed need for specifying these keyword. |
| 2576 |
|
You can simply specify like below. |
| 2577 |
|
|
| 2578 |
|
file read /etc/shadow task.uid=0 |
| 2579 |
|
|
| 2580 |
|
@ Remove per-profile preference. |
| 2581 |
|
|
| 2582 |
|
I removed per profile preference in order to make code simpler. |
| 2583 |
|
|
| 2584 |
@ Allow controlling generation of access granted logs for per an entry |
@ Allow controlling generation of access granted logs for per an entry |
| 2585 |
basis. |
basis. |
| 2586 |
|
|
| 2587 |
I added per-entry flag which controls generation of grant logs because |
I added per-entry flag which controls generation of grant logs because |
| 2588 |
Xen and KVM issues ioctl requests so frequently. For example, |
Xen and KVM issues ioctl requests so frequently. For example, |
| 2589 |
|
|
| 2590 |
file ioctl /dev/null 0x5401 ; set audit=no |
file ioctl /dev/null 0x5401 audit=no |
| 2591 |
|
|
| 2592 |
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 . |
| 2593 |
|
|
| 2594 |
file ioctl /dev/null 0x5401 ; set audit=yes |
file ioctl /dev/null 0x5401 audit=yes |
| 2595 |
|
|
| 2596 |
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 . |
| 2597 |
|
|
| 2598 |
file ioctl /dev/null 0x5401 |
file ioctl /dev/null 0x5401 |
| 2599 |
|
|
| 2600 |
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 . |
| 2601 |
|
|
| 2602 |
This flag is intended for frequently accessed resources like |
This flag is intended for frequently accessed resources like |
| 2603 |
|
|
| 2604 |
file read /var/www/html/\{\*\}/\*.html ; set audit=no |
file read /var/www/html/\{\*\}/\*.html audit=no |
| 2605 |
|
|
| 2606 |
. |
. |
| 2607 |
|
|
| 2608 |
|
@ Automatically create domain by execve() even if enforcing mode. |
| 2609 |
|
|
| 2610 |
|
Until now, new domains are not created if the domain was not defined and |
| 2611 |
|
current domain is enforcing mode ("CONFIG::file::execute=enforcing"). |
| 2612 |
|
|
| 2613 |
|
To be able to restrict shell session without using "keep_domain", |
| 2614 |
|
I changed to create new domains automatically even if current domain is |
| 2615 |
|
enforcing mode. |
| 2616 |
|
|
| 2617 |
|
@ Replace "task.state" with "auto_domain_transition". |
| 2618 |
|
|
| 2619 |
|
task.state is difficult to use. Thus, I replaced task.state with |
| 2620 |
|
auto_domain_transition which performs domain transition instead of |
| 2621 |
|
changing current process's state variables. |
| 2622 |
|
|
| 2623 |
|
If domain transition failed, current process will be killed by SIGKILL |
| 2624 |
|
signal. This should not happen in normal circumstances, for you know the |
| 2625 |
|
domain to transit to and thereby you will define the domain beforehand |
| 2626 |
|
when you use "auto_domain_transition" keyword. |
| 2627 |
|
|
| 2628 |
|
@ Replace "allow_transit" with "task manual_domain_transition". |
| 2629 |
|
|
| 2630 |
|
I changed this directive to specify absolute domainname (e.g. |
| 2631 |
|
"<kernel> /usr/sbin/httpd //app=cgi1\040id=10000") rather than virtual |
| 2632 |
|
pathname (e.g. "//app=cgi1\040id=10000") because you know the domain to |
| 2633 |
|
transit to and thereby you will define the domain beforehand when you use |
| 2634 |
|
"task manual_domain_transition" directive. |
| 2635 |
|
|
| 2636 |
|
This change allows you to jump to arbitrary domain. |
| 2637 |
|
|
| 2638 |
|
@ Add "task auto_domain_transition". |
| 2639 |
|
|
| 2640 |
|
This is similar to "task manual_domain_transition", but is automatically |
| 2641 |
|
applied whenever conditions are met. For example, |
| 2642 |
|
|
| 2643 |
|
task auto_domain_transition <kernel> //./non-root task.uid!=0 |
| 2644 |
|
|
| 2645 |
|
will automatically jump to "<kernel> //./non-root" domain if current |
| 2646 |
|
process's UID is not 0 whereas |
| 2647 |
|
|
| 2648 |
|
task manual_domain_transition <kernel> //./non-root task.uid!=0 |
| 2649 |
|
|
| 2650 |
|
will jump to "<kernel> //./non-root" domain if current process's UID is |
| 2651 |
|
not 0 and current process wrote "<kernel> //./non-root" + '\n' to |
| 2652 |
|
/proc/ccs/.transition interface. |
| 2653 |
|
|
| 2654 |
|
If domain transition failed, current process will be killed by SIGKILL |
| 2655 |
|
signal. |
| 2656 |
|
|
| 2657 |
@ Optimize for object's size. |
@ Optimize for object's size. |
| 2658 |
|
|
| 2659 |
I merged similar code in order to reduce object's filesize. |
I merged similar code in order to reduce object's filesize. |
| 2660 |
|
|
| 2661 |
|
Version 1.8.0 2010/XX/XX Feature enhancement release. |
TOMOYO
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