| 1723 |
to see process information. The content of /proc/ccs/.execute_handler is |
to see process information. The content of /proc/ccs/.execute_handler is |
| 1724 |
identical to /proc/ccs/.process_status . |
identical to /proc/ccs/.process_status . |
| 1725 |
|
|
| 1726 |
Version 1.6.5 2008/11/11 Third anniversary release. |
Version 1.6.5 2008/11/11 Third anniversary release. |
| 1727 |
|
|
| 1728 |
Fix 2008/12/01 |
Fix 2008/12/01 |
| 1729 |
|
|
| 2243 |
/proc/ccs/profile (which results in not protecting the system at all), |
/proc/ccs/profile (which results in not protecting the system at all), |
| 2244 |
I added a check for PROFILE_VERSION= . |
I added a check for PROFILE_VERSION= . |
| 2245 |
|
|
| 2246 |
Version 1.7.1 2009/11/11 Fourth anniversary release. |
Version 1.7.1 2009/11/11 Fourth anniversary release. |
| 2247 |
|
|
| 2248 |
Fix 2009/11/13 |
Fix 2009/11/13 |
| 2249 |
|
|
| 2342 |
|
|
| 2343 |
Note that '\0'-terminated binary string is converted to TOMOYO's string |
Note that '\0'-terminated binary string is converted to TOMOYO's string |
| 2344 |
inside kernel and prefix "//" is automatically added to the string so |
inside kernel and prefix "//" is automatically added to the string so |
| 2345 |
that domainname does not confclict with domainnames created by execve(). |
that domainname does not conflict with domainnames created by execve(). |
| 2346 |
Without this prefix, if "<kernel> /usr/sbin/sshd /bin/bash" domain is |
Without this prefix, if "<kernel> /usr/sbin/sshd /bin/bash" domain is |
| 2347 |
allowed to open /proc/ccs/.transition for writing and |
allowed to open /proc/ccs/.transition for writing and |
| 2348 |
"<kernel> /usr/sbin/sshd /bin/bash /usr/bin/passwd" domain is allowed to |
"<kernel> /usr/sbin/sshd /bin/bash /usr/bin/passwd" domain is allowed to |
| 2360 |
|
|
| 2361 |
@ Allow building as loadable kernel module. |
@ Allow building as loadable kernel module. |
| 2362 |
|
|
| 2363 |
To be able to minimize filesize increment on vmlinux, I made it |
To be able to minimize filesize increment of vmlinux, I made it |
| 2364 |
possible to compile TOMOYO Linux as loadable kernel module. |
possible to compile TOMOYO Linux as loadable kernel module. |
| 2365 |
Although patching the kernel source and recompiling the kernel are |
Although patching the kernel source and recompiling the kernel are |
| 2366 |
inevitable, this change will make it easier to enable TOMOYO Linux |
inevitable, this change will make it easier to enable TOMOYO Linux |
| 2367 |
when there is a filesize limitation on vmlinux (e.g. embedded systems). |
when there is a filesize limitation on vmlinux (e.g. embedded systems). |
| 2368 |
|
|
| 2369 |
|
Fix 2010/03/25 |
| 2370 |
|
|
| 2371 |
|
@ Fix ccs_get_ipv6_address() bug. |
| 2372 |
|
|
| 2373 |
|
Since 1.7.0 , ccs_get_ipv6_address() was by error returning address of |
| 2374 |
|
"struct list_head ccs_address_list" if memory allocation failed. |
| 2375 |
|
As a result, ccs_put_ipv6_address() will modify memory near |
| 2376 |
|
"struct list_head ccs_address_list" if memory allocation failed. |
| 2377 |
|
|
| 2378 |
|
Fix 2010/03/26 |
| 2379 |
|
|
| 2380 |
|
@ Fix ccs_lport_reserved() bug. |
| 2381 |
|
|
| 2382 |
|
Since 1.7.0 , ccs_lport_reserved() was by error checking wrong port |
| 2383 |
|
number. As a result, "deny_autobind" keyword was not working as expected. |
| 2384 |
|
|
| 2385 |
|
Version 1.7.2 2010/04/01 Feature enhancement release. |
| 2386 |
|
|
| 2387 |
|
Fix 2010/04/10 |
| 2388 |
|
|
| 2389 |
|
@ Fix invalid "struct nameidata" to "struct path" conversion macro. |
| 2390 |
|
|
| 2391 |
|
Regarding kernels 2.6.24 and earlier, I was converting "struct nameidata" |
| 2392 |
|
to "struct path" in caller side so that I can unify the callee function's |
| 2393 |
|
parameter type. But it turned out that the macro I used did not follow C |
| 2394 |
|
standards and did not work with gcc 4.x . As a result, "allow_pivot_root" |
| 2395 |
|
keyword was not working as expected. |
| 2396 |
|
|
| 2397 |
|
Fix 2010/05/05 |
| 2398 |
|
|
| 2399 |
|
@ Fix incorrect audit on/off control. |
| 2400 |
|
|
| 2401 |
|
The grant_log= and reject_log= parameters of CONFIG::misc::env were not |
| 2402 |
|
used because I forgot to update request type. As a result, those of |
| 2403 |
|
CONFIG::file::execute were used for CONFIG::misc::env . |
| 2404 |
|
|
| 2405 |
|
Those of CONFIG::file::rewrite were not used because I forgot to update |
| 2406 |
|
request type. As a result, those of CONFIG::file::truncate were used for |
| 2407 |
|
CONFIG::file::rewrite . |
| 2408 |
|
|
| 2409 |
|
Fix 2010/05/10 |
| 2410 |
|
|
| 2411 |
|
@ Fix incorrect out of memory warning. |
| 2412 |
|
|
| 2413 |
|
Out of memory warnings were not printed in some cases by error. |
| 2414 |
|
|
| 2415 |
|
Fix 2010/05/27 |
| 2416 |
|
|
| 2417 |
|
@ Add missing rcu_dereference() for ccs_find_execute_handler(). |
| 2418 |
|
|
| 2419 |
|
Since 1.7.0 , ccs_find_execute_handler() was by error using |
| 2420 |
|
list_for_each_entry() rather than list_for_each_entry_rcu(). |
| 2421 |
|
This bug affects only Alpha architecture. |
| 2422 |
|
|
| 2423 |
|
Fix 2010/06/03 |
| 2424 |
|
|
| 2425 |
|
@ Fix missing sanity check for "file_pattern". |
| 2426 |
|
|
| 2427 |
|
Since 1.7.0 , ccs_write_pattern_policy() was by error accepting |
| 2428 |
|
invalid pathname. |
| 2429 |
|
|
| 2430 |
|
Fix 2010/06/09 |
| 2431 |
|
|
| 2432 |
|
@ Add missing ccs_put_name() in ccs_parse_envp(). |
| 2433 |
|
|
| 2434 |
|
Since 1.7.0 , ccs_parse_envp() was not calling ccs_put_name() if |
| 2435 |
|
environment variable's value ('if exec.envp["name"]="value"' condition) |
| 2436 |
|
was invalid. |
| 2437 |
|
|
| 2438 |
|
@ Add missing NULL check in ccs_condition(). |
| 2439 |
|
|
| 2440 |
|
Since 1.7.0 , if 'if symlink.target=' part was given against non-file |
| 2441 |
|
permissions (e.g. allow_env PATH if symlink.target="/"), it triggered |
| 2442 |
|
NULL pointer dereference. |
| 2443 |
|
|
| 2444 |
|
Fix 2010/10/28 |
| 2445 |
|
|
| 2446 |
|
@ 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 |
|
@ Add preserve KABI compatibility option. (2.6 kernels only) |
| 2454 |
|
|
| 2455 |
|
TOMOYO needs "struct ccs_domain_info *" and "u32" for each |
| 2456 |
|
"struct task_struct". But embedding these variables into |
| 2457 |
|
"struct task_struct" breaks KABI for prebuilt kernel modules (which |
| 2458 |
|
means that you will need to rebuild prebuilt kernel modules). |
| 2459 |
|
|
| 2460 |
|
Since KABI is commonly used (compared to 5 years ago), asking users to |
| 2461 |
|
rebuild kernel modules which are not included in kernel package is no |
| 2462 |
|
longer preferable. Therefore, I added a new option that keeps |
| 2463 |
|
"struct task_struct" unmodified in order to keep KABI. |
| 2464 |
|
|
| 2465 |
|
Note that you have to use ccs-patch-2.6.\*.diff which patches |
| 2466 |
|
kernel/fork.c in order to use this option. Otherwise, TOMOYO will leak |
| 2467 |
|
memory whenever "struct task_struct" is released. |
| 2468 |
|
|
| 2469 |
|
@ Change directives. |
| 2470 |
|
|
| 2471 |
|
I removed "allow_" prefix from directives. New directives for files are |
| 2472 |
|
prefixed with "file ". For example, "allow_read" changed to "file read", |
| 2473 |
|
"allow_ioctl" changed to "file ioctl". New directive for "allow_network |
| 2474 |
|
TCP" is "network inet stream", "allow_network UDP" is "network inet |
| 2475 |
|
dgram", "allow_network RAW" is "network inet raw". New directive for |
| 2476 |
|
"allow_env" is "misc env". New directive for "allow_signal" is "ipc |
| 2477 |
|
signal". New directive for "allow_capability" is "capability". These new |
| 2478 |
|
directives correspond with keywords used by profile's CONFIG lines. |
| 2479 |
|
|
| 2480 |
|
I removed "deny_rewrite" and "allow_rewrite" directives and introduced |
| 2481 |
|
"file append" directive. Thus, permission for open(O_WRONLY | O_APPEND) |
| 2482 |
|
changed from "allow_write" + "allow_rewrite" to "file append". |
| 2483 |
|
|
| 2484 |
|
I removed "SYS_MOUNT", "SYS_UMOUNT", "SYS_CHROOT", "SYS_KILL", |
| 2485 |
|
"SYS_LINK", "SYS_SYMLINK", "SYS_RENAME", "SYS_UNLINK", "SYS_CHMOD", |
| 2486 |
|
"SYS_CHOWN", "SYS_IOCTL", "SYS_PIVOT_ROOT" keywords from capabilities |
| 2487 |
|
because these permissions can be checked by other directives (e.g. |
| 2488 |
|
"file mount", "ipc signal"). |
| 2489 |
|
|
| 2490 |
|
I also removed "conceal_mount" keyword from capabilities because this |
| 2491 |
|
check requires hooks in filesystem part while almost all hooks for |
| 2492 |
|
filesystem part have moved to LSM by Linux 2.6.34. |
| 2493 |
|
|
| 2494 |
|
New directive for "execute_handler" is "task auto_execute_handler", |
| 2495 |
|
"denied_execute_handler" is "task denied_execute_handler". |
| 2496 |
|
|
| 2497 |
|
@ Distinguish send() and recv() operations. |
| 2498 |
|
|
| 2499 |
|
Until now, it was impossible for UDP and IP sockets to allow either |
| 2500 |
|
only sending or only receiving because permissions were aggregated with |
| 2501 |
|
"connect" keyword. I broke "connect" keyword into "send" and "recv" |
| 2502 |
|
keywords so that you can keep access control for send() operation enabled |
| 2503 |
|
when you have to disable access control for recv() operation due to |
| 2504 |
|
application breakage by discarding incoming datagram. |
| 2505 |
|
|
| 2506 |
|
@ Add Unix domain socket restriction support. |
| 2507 |
|
|
| 2508 |
|
Until now, it was possible to restrict only inet domain sockets (i.e. |
| 2509 |
|
TCP/UDP/RAW). I added restriction for Unix domain sockets (i.e. stream/ |
| 2510 |
|
dgram/seqpacket). New directive "network unix" is added as well as |
| 2511 |
|
"network inet" directive. |
| 2512 |
|
|
| 2513 |
|
@ Allow specifying multiple permissions in a line. |
| 2514 |
|
|
| 2515 |
|
Until now, only "allow_read/write" can be specified for combination of |
| 2516 |
|
"allow_read" + "allow_write". Now, you can combine other permissions as |
| 2517 |
|
long as type of parameters for these permissions is same. For example, |
| 2518 |
|
"file read/write/append/execute/unlink/truncate /tmp/file" is correct |
| 2519 |
|
but "file read/write/create /tmp/file" is wrong because "file create" |
| 2520 |
|
requires create mode whereas "file read" and "file write" do not. |
| 2521 |
|
|
| 2522 |
|
@ Allow wildcard for execute permission and domainname. |
| 2523 |
|
|
| 2524 |
|
Until now, to execute programs with temporary names, "aggregator" is |
| 2525 |
|
needed. To simplify code, I modified to accept wildcards for execute |
| 2526 |
|
permission and domainname. Now, you can directly specify |
| 2527 |
|
"file execute /tmp/logrotate.\?\?\?\?\?\?" and use |
| 2528 |
|
"/tmp/logrotate.\?\?\?\?\?\?" within domainnames. |
| 2529 |
|
|
| 2530 |
|
@ Change pathname for non-rename()able filesystems. |
| 2531 |
|
|
| 2532 |
|
LSM version of TOMOYO wants to use /proc/self/ rather than /proc/$PID/ if |
| 2533 |
|
$PID matches current thread's process ID in order to prevent current |
| 2534 |
|
thread from accessing other process's information unless needed. |
| 2535 |
|
But since procfs can be mounted on various locations (e.g. /proc/ /proc2/ |
| 2536 |
|
/p/ /tmp/foo/100/p/ ), LSM version of TOMOYO cannot tell that whether the |
| 2537 |
|
numeric part in the string returned by __d_path() represents process ID |
| 2538 |
|
or not. |
| 2539 |
|
|
| 2540 |
|
Therefore, to be able to convert from $PID to self no matter where procfs |
| 2541 |
|
is mounted, I changed pathname representations for filesystems which do |
| 2542 |
|
not support rename() operation (e.g. proc, sysfs, securityfs). |
| 2543 |
|
|
| 2544 |
|
Now, "/proc/self/mounts" changed to "proc:/self/mounts" and |
| 2545 |
|
"/sys/kernel/security/" changed to "sys:/kernel/security/" and |
| 2546 |
|
"/dev/pts/0" changed to "devpts:/0". |
| 2547 |
|
|
| 2548 |
|
@ Add a new keyword "any" for domain transition control. |
| 2549 |
|
|
| 2550 |
|
To be able to make it easier to apply auto_execute_handler on each |
| 2551 |
|
domain, I added "any" keyword to domain transition control keywords. Now, |
| 2552 |
|
"initialize_domain /usr/sbin/sshd" changed to |
| 2553 |
|
"initialize_domain /usr/sbin/sshd from any" and |
| 2554 |
|
"keep_domain <kernel> /usr/sbin/sshd /bin/bash" changed to |
| 2555 |
|
"keep_domain any from <kernel> /usr/sbin/sshd /bin/bash". |
| 2556 |
|
|
| 2557 |
|
"keep_domain /path/to/auto_execute_handler from any" will allow you to |
| 2558 |
|
apply auto_execute_handler for any domains without creating domains for |
| 2559 |
|
auto_execute_handler. |
| 2560 |
|
|
| 2561 |
|
@ Change buffering mode for reading policy. |
| 2562 |
|
|
| 2563 |
|
To be able to read() very very long lines correctly, I changed the way |
| 2564 |
|
TOMOYO buffers policy for reading. |
| 2565 |
|
|
| 2566 |
|
@ Introduce "acl_group" keyword. |
| 2567 |
|
|
| 2568 |
|
Until now, it was possible to specify only "allow_read" and "allow_env" |
| 2569 |
|
keywords in the exception policy. |
| 2570 |
|
|
| 2571 |
|
Since some operations like "file read/write/append /dev/null" and |
| 2572 |
|
"network UDP send/recv @DNS_SERVER 53" are very common and should be |
| 2573 |
|
permitted to all domains, I introduced "acl_group" keyword for giving |
| 2574 |
|
such permissions. |
| 2575 |
|
|
| 2576 |
|
For example, specify "acl_group 0 file read/write/append /dev/null" in |
| 2577 |
|
the exception policy and specify "use_group 0" from the domains in the |
| 2578 |
|
domain policy. |
| 2579 |
|
|
| 2580 |
|
"ignore_global_allow_read" and "ignore_global_allow_env" directives were |
| 2581 |
|
removed from domain policy and "use_group" keyword was added. |
| 2582 |
|
|
| 2583 |
|
@ Remove "if" and "; set" keyword. |
| 2584 |
|
|
| 2585 |
|
I removed need for specifying these keyword. |
| 2586 |
|
You can simply specify like below. |
| 2587 |
|
|
| 2588 |
|
file read /etc/shadow task.uid=0 |
| 2589 |
|
|
| 2590 |
|
@ Remove "file_pattern" keyword. |
| 2591 |
|
|
| 2592 |
|
I removed "file_pattern" keyword because it is impossible to predefine |
| 2593 |
|
all possible pathname patterns. Also, learning pathnames using incomplete |
| 2594 |
|
patterns makes it difficult to later replace using "path_group" keyword. |
| 2595 |
|
|
| 2596 |
|
@ Replace verbose= parameter with statistic interface. |
| 2597 |
|
|
| 2598 |
|
Since it is noisy if a lot of policy violation messages are printed, |
| 2599 |
|
I removed printk(). To be able to check whether policy violation occurred |
| 2600 |
|
or not, I introduced /proc/ccs/stat interface which counts number of |
| 2601 |
|
policy violations occurred. You can firstly check /proc/ccs/stat and then |
| 2602 |
|
check /proc/ccs/reject_log . |
| 2603 |
|
|
| 2604 |
|
@ Remove global preference. |
| 2605 |
|
|
| 2606 |
|
I removed global preference in order to make code simpler. |
| 2607 |
|
|
| 2608 |
|
@ Allow controlling generation of access granted logs for per an entry |
| 2609 |
|
basis. |
| 2610 |
|
|
| 2611 |
|
I added per-entry flag which controls generation of grant logs because |
| 2612 |
|
Xen and KVM issues ioctl requests so frequently. For example, |
| 2613 |
|
|
| 2614 |
|
file ioctl /dev/null 0x5401 grant_log=no |
| 2615 |
|
|
| 2616 |
|
will suppress /proc/ccs/grant_log even if preference says grant_log=yes . |
| 2617 |
|
|
| 2618 |
|
file ioctl /dev/null 0x5401 grant_log=yes |
| 2619 |
|
|
| 2620 |
|
will generate /proc/ccs/grant_log even if preference says grant_log=no . |
| 2621 |
|
|
| 2622 |
|
file ioctl /dev/null 0x5401 |
| 2623 |
|
|
| 2624 |
|
will generate /proc/ccs/grant_log only if preference says grant_log=yes . |
| 2625 |
|
|
| 2626 |
|
This flag is intended for frequently accessed resources like |
| 2627 |
|
|
| 2628 |
|
file read /var/www/html/\{\*\}/\*.html grant_log=no |
| 2629 |
|
|
| 2630 |
|
. |
| 2631 |
|
|
| 2632 |
|
@ Automatically create domain by execve() even if enforcing mode. |
| 2633 |
|
|
| 2634 |
|
Until now, new domains are not created if the domain was not defined and |
| 2635 |
|
current domain is enforcing mode ("CONFIG::file::execute=enforcing"). |
| 2636 |
|
|
| 2637 |
|
To be able to restrict shell session without using "keep_domain", |
| 2638 |
|
I changed to create new domains automatically even if current domain is |
| 2639 |
|
enforcing mode. |
| 2640 |
|
|
| 2641 |
|
@ Replace "task.state" with "auto_domain_transition". |
| 2642 |
|
|
| 2643 |
|
task.state is difficult to use. Thus, I replaced task.state with |
| 2644 |
|
auto_domain_transition which performs domain transition instead of |
| 2645 |
|
changing current process's state variables. |
| 2646 |
|
|
| 2647 |
|
If domain transition failed, current process will be killed by SIGKILL |
| 2648 |
|
signal. This should not happen in normal circumstances, for you know the |
| 2649 |
|
domain to transit to and thereby you will define the domain beforehand |
| 2650 |
|
when you use "auto_domain_transition" keyword. |
| 2651 |
|
|
| 2652 |
|
@ Replace "allow_transit" with "task manual_domain_transition". |
| 2653 |
|
|
| 2654 |
|
I changed this directive to specify absolute domainname (e.g. |
| 2655 |
|
"<kernel> /usr/sbin/httpd //app=cgi1\040id=10000") rather than virtual |
| 2656 |
|
pathname (e.g. "//app=cgi1\040id=10000") because you know the domain to |
| 2657 |
|
transit to and thereby you will define the domain beforehand when you use |
| 2658 |
|
"task manual_domain_transition" directive. |
| 2659 |
|
|
| 2660 |
|
This change allows you to jump to arbitrary domain. |
| 2661 |
|
|
| 2662 |
|
@ Add "task auto_domain_transition". |
| 2663 |
|
|
| 2664 |
|
This is similar to "task manual_domain_transition", but is automatically |
| 2665 |
|
applied whenever conditions are met. For example, |
| 2666 |
|
|
| 2667 |
|
task auto_domain_transition <kernel> //./non-root task.uid!=0 |
| 2668 |
|
|
| 2669 |
|
will automatically jump to "<kernel> //./non-root" domain if current |
| 2670 |
|
process's UID is not 0 whereas |
| 2671 |
|
|
| 2672 |
|
task manual_domain_transition <kernel> //./non-root task.uid!=0 |
| 2673 |
|
|
| 2674 |
|
will jump to "<kernel> //./non-root" domain if current process's UID is |
| 2675 |
|
not 0 and current process wrote "<kernel> //./non-root" to |
| 2676 |
|
/proc/ccs/self_domain interface. |
| 2677 |
|
|
| 2678 |
|
If domain transition failed, current process will be killed by SIGKILL |
| 2679 |
|
signal. |
| 2680 |
|
|
| 2681 |
|
@ Optimize for object's size. |
| 2682 |
|
|
| 2683 |
|
I merged similar code in order to reduce object's filesize. |
| 2684 |
|
|
| 2685 |
|
Version 1.8.0 2010/11/11 Fifth anniversary release. |
| 2686 |
|
|
| 2687 |
|
Fix 2010/12/01 |
| 2688 |
|
|
| 2689 |
|
@ Use same interface for audit logs. |
| 2690 |
|
|
| 2691 |
|
To be able to perform fine grained filtering by /usr/sbin/ccs-auditd , |
| 2692 |
|
I merged /proc/ccs/grant_log and /proc/ccs/reject_log as |
| 2693 |
|
/proc/ccs/audit and added granted=yes or granted=no to audit logs. |
TOMOYO
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