| 865 |
I replaced some types with 'unsigned int'. |
I replaced some types with 'unsigned int'. |
| 866 |
|
|
| 867 |
Version 1.4 2007/04/01 x86_64 support release. |
Version 1.4 2007/04/01 x86_64 support release. |
| 868 |
|
|
| 869 |
|
Fix 2007/04/18 |
| 870 |
|
|
| 871 |
|
@ Change argv[0] checking rule. |
| 872 |
|
|
| 873 |
|
I was comparing the basename of symbolic link's pathname and argv[0]. |
| 874 |
|
Since execute permission check and domain transition are done |
| 875 |
|
based on realpath while argv[0] check is done based on the symlink's |
| 876 |
|
pathname and argv[0], this specification will allow attackers behave |
| 877 |
|
as /bin/cat in the domain of /bin/ls if "/bin/ls and /bin/cat are |
| 878 |
|
links to /sbin/busybox" and "the attacker is permitted to create |
| 879 |
|
a symlink named ~/cat that points to /bin/ls" and "the attacker is |
| 880 |
|
permitted to run /bin/ls". |
| 881 |
|
So, I changed to compare the basename of realpath and argv[0]. |
| 882 |
|
Also, I moved the location to compare before processing |
| 883 |
|
"aggregator" directive so that |
| 884 |
|
"aggregator /tmp/logrotate.\?\?\?\?\?\? /tmp/logrotate.tmp" |
| 885 |
|
won't cause the mismatch of the basename of realpath and argv[0]. |
| 886 |
|
|
| 887 |
|
If /bin/ls is a symlink to /sbin/busybox, then |
| 888 |
|
creating a symlink named ~/cat that points to /bin/ls and |
| 889 |
|
executing ~/cat won't work as expected because permission check and |
| 890 |
|
domain transition are done using /sbin/busybox (realpath of /bin/ls) |
| 891 |
|
and will be rejected since the administrator won't grant |
| 892 |
|
"1 /sbin/busybox". |
| 893 |
|
|
| 894 |
|
Fix 2007/05/07 |
| 895 |
|
|
| 896 |
|
@ Support pathname subtraction. |
| 897 |
|
|
| 898 |
|
There was no way to exclude specific pathnames when granting |
| 899 |
|
permissions using wildcards. |
| 900 |
|
There would be a need to exclude specific files and directories. |
| 901 |
|
I introduced "\-" as subtraction operator. |
| 902 |
|
|
| 903 |
|
"A\-B" means "A" other than "B". |
| 904 |
|
"A\-B\-C" means "A" other than "B" and "C". |
| 905 |
|
"A\-B\-C\-D" means "A" other than "B" and "C" and "D". |
| 906 |
|
|
| 907 |
|
"A", "B", "C", "D" may contain wildcards. |
| 908 |
|
|
| 909 |
|
An example usage is "/home/\*/\*\-.ssh/\*", which means |
| 910 |
|
"/home/\*/\*/\*" other than "/home/\*/.ssh/\*". |
| 911 |
|
|
| 912 |
|
"A" should contain wildcards because subtraction from constants |
| 913 |
|
(e.g. "/usr\-usr/" or "/usr\-home/") is meaningless. |
| 914 |
|
|
| 915 |
|
Don't try "A\-B\+C" because "\+" is not addition operator. |
| 916 |
|
|
| 917 |
|
Fix 2007/05/24 |
| 918 |
|
|
| 919 |
|
@ Fix autobind hook. |
| 920 |
|
|
| 921 |
|
The location to call SAKURA_MayAutobind() in net/ipv4/udp.c |
| 922 |
|
and net/ipv6/udp.c were wrong. |
| 923 |
|
|
| 924 |
|
Fix 2007/06/03 |
| 925 |
|
|
| 926 |
|
@ Add a space in MakeMountOptions(). |
| 927 |
|
|
| 928 |
|
I forgot to add a space after "atime" and "noatime". |
| 929 |
|
|
| 930 |
|
Version 1.4.1 2007/06/05 Minor update release. |
| 931 |
|
|
| 932 |
|
Fix 2007/07/04 |
| 933 |
|
|
| 934 |
|
@ Fix ReadAddressGroupPolicy() bug. |
| 935 |
|
|
| 936 |
|
ReadAddressGroupPolicy() fails if both "path_group" and "address_group" are used |
| 937 |
|
because I forgot to set "head->read_var1 = NULL". |
| 938 |
|
|
| 939 |
|
Fix 2007/07/10 |
| 940 |
|
|
| 941 |
|
@ Add compat_sys_stime() hook. |
| 942 |
|
|
| 943 |
|
Some of 64bit kernels support compat_sys_stime() |
| 944 |
|
but permission check was missing. |
| 945 |
|
|
| 946 |
|
Version 1.4.2 2007/07/13 Bug fix release. |
| 947 |
|
|
| 948 |
|
Fix 2007/08/06 |
| 949 |
|
|
| 950 |
|
@ Remove mount-flags manipulation. |
| 951 |
|
|
| 952 |
|
Until now, administrator is permitted to turn on/off specific mount options |
| 953 |
|
regardless of mount options passed to kernel. |
| 954 |
|
I removed this feature because "exact option matching" sounds better than |
| 955 |
|
"automatic option enabler/disabler". |
| 956 |
|
|
| 957 |
|
@ Remove /proc/ccs/info/mapping . |
| 958 |
|
|
| 959 |
|
I removed /proc/ccs/info/mapping because nobody seems to use this feature. |
| 960 |
|
|
| 961 |
|
@ Call external policy loader automatically. |
| 962 |
|
|
| 963 |
|
Until now, users had to add init=/.init parameter to load policy |
| 964 |
|
before /sbin/init starts. |
| 965 |
|
I inserted call_usermodehelper() to call external policy loader when |
| 966 |
|
execve("/sbin/init") is requested and external policy loader exists. |
| 967 |
|
|
| 968 |
|
This change will remove init=/.init parameter from most environment, |
| 969 |
|
although call_usermodehelper() can't handle interactive operations. |
| 970 |
|
|
| 971 |
|
@ Move external policy loader from /.init to /sbin/ccs-init . |
| 972 |
|
|
| 973 |
|
Installing programs in / directory is not good for packaging. |
| 974 |
|
|
| 975 |
|
Fix 2007/08/13 |
| 976 |
|
|
| 977 |
|
@ Update external policy loader. |
| 978 |
|
|
| 979 |
|
It turned out that /sbin/ccs-init invoked via call_usermodehelper() |
| 980 |
|
can handle interactive operations by opening /dev/console . |
| 981 |
|
Now, there is no difference between init=/sbin/ccs-init and |
| 982 |
|
call_usermodehelper("/sbin/ccs-init"), and users no longer need to |
| 983 |
|
add init=/sbin/ccs-init parameter to load policy before /sbin/init starts. |
| 984 |
|
|
| 985 |
|
Fix 2007/08/14 |
| 986 |
|
|
| 987 |
|
@ Update recvmsg() hooks. |
| 988 |
|
|
| 989 |
|
Until now, it was impossible to apply network access control for |
| 990 |
|
incoming UDP and RAW packets if they are brought to userland using |
| 991 |
|
read() or recvmsg() with NULL address because address buffer is NULL. |
| 992 |
|
I moved hooks from sock_recvmsg() to skb_recv_datagram() so that |
| 993 |
|
network access control for incoming UDP and RAW packets always work. |
| 994 |
|
|
| 995 |
|
Fix 2007/08/16 |
| 996 |
|
|
| 997 |
|
@ Return appropriate error code for CheckMountPermission(). |
| 998 |
|
|
| 999 |
|
I was returning -EPERM if something is wrong with CheckMountPermission(). |
| 1000 |
|
But SELinux determines whether selinuxfs is supported by kernel |
| 1001 |
|
based on whether error code is -ENODEV or not. |
| 1002 |
|
So I stopped returning -EPERM unconditionally. |
| 1003 |
|
|
| 1004 |
|
Fix 2007/08/17 |
| 1005 |
|
|
| 1006 |
|
@ Remove initializer directive. |
| 1007 |
|
|
| 1008 |
|
Use "initialize_domain" instrad of "initializer". |
| 1009 |
|
|
| 1010 |
|
Fix 2007/08/21 |
| 1011 |
|
|
| 1012 |
|
@ Fix "allow_argv0 ... if if ..." bug. |
| 1013 |
|
|
| 1014 |
|
It was impossible to use a word "if" to the second argument of |
| 1015 |
|
allow_argv0 if condition part is used. |
| 1016 |
|
|
| 1017 |
|
Fix 2007/08/24 |
| 1018 |
|
|
| 1019 |
|
@ Move /proc/ccs/\*/\* to /proc/ccs/\* . |
| 1020 |
|
|
| 1021 |
|
Some pathnames for /proc/ccs/ interface were changed. |
| 1022 |
|
|
| 1023 |
|
Fix 2007/09/05 |
| 1024 |
|
|
| 1025 |
|
@ Drop MSG_PEEK'ed message before skb_free_datagram(). |
| 1026 |
|
|
| 1027 |
|
I need to remove head message from unwanted source |
| 1028 |
|
from socket's receive queue so that the caller can pick up |
| 1029 |
|
next message from wanted source with MSG_PEEK flags. |
| 1030 |
|
|
| 1031 |
|
Version 1.5.0 2007/09/20 Usability enhancement release. |
| 1032 |
|
|
| 1033 |
|
Fix 2007/09/27 |
| 1034 |
|
|
| 1035 |
|
@ Avoid eating memory after quota exceeded. |
| 1036 |
|
|
| 1037 |
|
Although ACL entries in a domain won't be added if the domain's quota |
| 1038 |
|
has exceeded, SaveName() in AddFileACL() is called anyway. |
| 1039 |
|
This caused unneeded memory consumption. |
| 1040 |
|
|
| 1041 |
|
Now, quota checking is done before getting domain_acl_lock lock. |
| 1042 |
|
This may exceed quota by one or two entries, but that won't matter. |
| 1043 |
|
|
| 1044 |
|
Fix 2007/10/16 |
| 1045 |
|
|
| 1046 |
|
@ Add environment variable check. |
| 1047 |
|
|
| 1048 |
|
There are environment variables that may cause dangerous behavior |
| 1049 |
|
like LD_\* . |
| 1050 |
|
So I introduced 'allow_env' directive that allows specified |
| 1051 |
|
environment variable inherited to next domain. |
| 1052 |
|
Unlike other permissions, this check is done at execve() time |
| 1053 |
|
using next domain's ACL information. |
| 1054 |
|
|
| 1055 |
|
To manage commonly inherited environments like PATH , |
| 1056 |
|
you can use 'allow_env' directive in exception policy |
| 1057 |
|
to globally grant specified environment variable. |
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