| 933 |
|
|
| 934 |
@ Fix ReadAddressGroupPolicy() bug. |
@ Fix ReadAddressGroupPolicy() bug. |
| 935 |
|
|
| 936 |
ReadAddressGroupPolicy() fails if both "path_group" and "address_group" are used |
ReadAddressGroupPolicy() fails if both "path_group" and "address_group" |
| 937 |
because I forgot to set "head->read_var1 = NULL". |
are used because I forgot to set "head->read_var1 = NULL". |
| 938 |
|
|
| 939 |
Fix 2007/07/10 |
Fix 2007/07/10 |
| 940 |
|
|
| 949 |
|
|
| 950 |
@ Remove mount-flags manipulation. |
@ Remove mount-flags manipulation. |
| 951 |
|
|
| 952 |
Until now, administrator is permitted to turn on/off specific mount options |
Until now, administrator is permitted to turn on/off specific mount |
| 953 |
regardless of mount options passed to kernel. |
options regardless of mount options passed to kernel. |
| 954 |
I removed this feature because "exact option matching" sounds better than |
I removed this feature because "exact option matching" sounds better than |
| 955 |
"automatic option enabler/disabler". |
"automatic option enabler/disabler". |
| 956 |
|
|
| 957 |
@ Remove /proc/ccs/info/mapping . |
@ Remove /proc/ccs/info/mapping . |
| 958 |
|
|
| 959 |
I removed /proc/ccs/info/mapping because nobody seems to use this feature. |
I removed /proc/ccs/info/mapping because nobody seems to use this |
| 960 |
|
feature. |
| 961 |
|
|
| 962 |
@ Call external policy loader automatically. |
@ Call external policy loader automatically. |
| 963 |
|
|
| 981 |
can handle interactive operations by opening /dev/console . |
can handle interactive operations by opening /dev/console . |
| 982 |
Now, there is no difference between init=/sbin/ccs-init and |
Now, there is no difference between init=/sbin/ccs-init and |
| 983 |
call_usermodehelper("/sbin/ccs-init"), and users no longer need to |
call_usermodehelper("/sbin/ccs-init"), and users no longer need to |
| 984 |
add init=/sbin/ccs-init parameter to load policy before /sbin/init starts. |
add init=/sbin/ccs-init parameter to load policy before /sbin/init |
| 985 |
|
starts. |
| 986 |
|
|
| 987 |
Fix 2007/08/14 |
Fix 2007/08/14 |
| 988 |
|
|
| 1103 |
To my surprise, "mount --bind source dest" accepts |
To my surprise, "mount --bind source dest" accepts |
| 1104 |
not only "both source and dest are directory" |
not only "both source and dest are directory" |
| 1105 |
but also "both source and dest are non-directory". |
but also "both source and dest are non-directory". |
| 1106 |
I was rejecting if dest is not a derectory in AddMountACL(). |
I was rejecting if dest is not a directory in AddMountACL(). |
| 1107 |
|
|
| 1108 |
@ Change log format. |
@ Change log format. |
| 1109 |
|
|
| 1110 |
Profile number and mode is added in audit logs. |
Profile number and mode is added in audit logs. |
| 1111 |
|
|
| 1112 |
|
Fix 2008/01/03 |
| 1113 |
|
|
| 1114 |
|
@ Change directive for file's read/write/execute permission. |
| 1115 |
|
|
| 1116 |
|
Directives for file's read/write/execute permissions were |
| 1117 |
|
4/2/1 respectively. But for easier understanding, they are now |
| 1118 |
|
replaced by read/write/execute (e.g. "allow_read" instead of "4"). |
| 1119 |
|
But for easier inputting, 4/2/1 are still accepted instead of |
| 1120 |
|
allow_read/allow_write/allow_execute respectively. |
| 1121 |
|
|
| 1122 |
|
@ Change internal data structure. |
| 1123 |
|
|
| 1124 |
|
Since I don't have more than 16 types of file permissions, |
| 1125 |
|
I combined them using bit-fields. |
| 1126 |
|
|
| 1127 |
|
Each entry had a field for conditional permission support. |
| 1128 |
|
But since this field is unlikely used, I separated the field from |
| 1129 |
|
common part. |
| 1130 |
|
|
| 1131 |
|
These changes will reduce memory used by policy. |
| 1132 |
|
|
| 1133 |
|
Fix 2008/01/15 |
| 1134 |
|
|
| 1135 |
|
@ Add ptrace() hook. |
| 1136 |
|
|
| 1137 |
|
To prevent attackers from controlling important processes using |
| 1138 |
|
ptrace(), I added a hook for ptrace(). |
| 1139 |
|
Most programs (except strace(1) and gdb(1)) won't use ptrace(2). |
| 1140 |
|
|
| 1141 |
|
@ Fix sleep condition check in CheckSocketRecvDatagramPermission(). |
| 1142 |
|
|
| 1143 |
|
It seems that correct method to use is in_atomic() |
| 1144 |
|
rather than in_interrupt() because in_atomic() returns nonzero |
| 1145 |
|
whenever scheduling is not allowed. |
| 1146 |
|
|
| 1147 |
|
Fix 2008/02/05 |
| 1148 |
|
|
| 1149 |
|
@ Use find_task_by_vpid() instead of find_task_pid(). |
| 1150 |
|
|
| 1151 |
|
Kernel 2.6.24 introduced PID namespace. |
| 1152 |
|
To search PID given from userland, the kernel needs to use |
| 1153 |
|
find_task_by_vpid() instead of find_task_pid(). |
| 1154 |
|
|
| 1155 |
|
Fix 2008/02/14 |
| 1156 |
|
|
| 1157 |
|
@ Add execve() parameter checking. |
| 1158 |
|
|
| 1159 |
|
Until now, it was impossible to check argv[] and envp[] parameters |
| 1160 |
|
passed to execve(). |
| 1161 |
|
I expanded conditional permission syntax so that |
| 1162 |
|
{ argc, envc, argv[] , envp[] } parameters can be checked if needed. |
| 1163 |
|
This will allow administrator permit execution of /bin/sh only when |
| 1164 |
|
/bin/sh is invoked in the form of "/bin/sh -c" and environment variable |
| 1165 |
|
HOME is set by specifying |
| 1166 |
|
|
| 1167 |
|
allow_execute /bin/sh if exec.argv[1]="-c" exec.envp["HOME"]!=NULL |
| 1168 |
|
|
| 1169 |
|
in the policy. |
| 1170 |
|
This extension will make exploit codes difficult to start /bin/sh because |
| 1171 |
|
they unlikely set up environment variables and unlikely specify "-c" |
| 1172 |
|
option when invoking /bin/sh , whereas proper functions likely set up |
| 1173 |
|
environment variables and likely specify "-c" option. |
| 1174 |
|
|
| 1175 |
|
Fix 2008/02/18 |
| 1176 |
|
|
| 1177 |
|
@ Add process state checking. |
| 1178 |
|
|
| 1179 |
|
Until now, it was impossible to change ACL without executing program. |
| 1180 |
|
I added three variables for performing stateful checking within a domain. |
| 1181 |
|
You can set current process's state like: |
| 1182 |
|
|
| 1183 |
|
allow_network TCP accept @TRUSTED_HOSTS 1024-65535 ; set task.state[0]=1 |
| 1184 |
|
allow_network TCP accept @UNTRUSTED_HOSTS 1024-65535 ; set task.state[0]=0 |
| 1185 |
|
|
| 1186 |
|
and you can use the state like |
| 1187 |
|
|
| 1188 |
|
allow_read /path/to/important/file if task.state[0]=1 |
| 1189 |
|
|
| 1190 |
|
in the policy. |
| 1191 |
|
The state changes when the request was granted by the MAC's policy, |
| 1192 |
|
so please be careful with situations where the state has changed |
| 1193 |
|
successfully but the request was not processed because of other reasons |
| 1194 |
|
(e.g. out of memory). |
| 1195 |
|
|
| 1196 |
|
Fix 2008/02/26 |
| 1197 |
|
|
| 1198 |
|
@ Support /proc/ccs/ access by non-root user. |
| 1199 |
|
|
| 1200 |
|
Until now, only root user can access /proc/ccs/ interface. |
| 1201 |
|
But to permit /proc/ccs/ access by non-root user so that it won't require |
| 1202 |
|
ssh login by root user when administrating from remote host, |
| 1203 |
|
I made "(current->uid == 0 && current->euid == 0)" requirement optional. |
| 1204 |
|
If this requirement is disabled, only "conventional DAC permission |
| 1205 |
|
checks" and "/proc/ccs/manager checks" are used. |
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