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selinux-refpolicy
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Revise selinux module interfaces for perms protected by neverallows. 

Use the allow rules on the relevant attributes in selinux.te, rather than
only using the attribute to pass the neverallows.

Closes #14
This commit is contained in:
Chris PeBenito 2015-11-04 15:10:29 -05:00
parent a3208c3495
commit b94f45d760
2 changed files with 44 additions and 26 deletions
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24
policy/modules/kernel/selinux.if
View File

@ -322,19 +322,10 @@ interface(`selinux_get_enforce_mode',`
#
interface(`selinux_set_enforce_mode',`
gen_require(`
type security_t;
attribute can_setenforce;
bool secure_mode_policyload;
')
dev_search_sysfs($1)
allow $1 security_t:dir list_dir_perms;
allow $1 security_t:file rw_file_perms;
typeattribute $1 can_setenforce;
if(!secure_mode_policyload) {
allow $1 security_t:security setenforce;
}
')
########################################
@ -349,19 +340,10 @@ interface(`selinux_set_enforce_mode',`
#
interface(`selinux_load_policy',`
gen_require(`
type security_t;
attribute can_load_policy;
bool secure_mode_policyload;
')
dev_search_sysfs($1)
allow $1 security_t:dir list_dir_perms;
allow $1 security_t:file rw_file_perms;
typeattribute $1 can_load_policy;
if(!secure_mode_policyload) {
allow $1 security_t:security load_policy;
}
')
########################################
@ -518,15 +500,9 @@ interface(`selinux_set_all_booleans',`
#
interface(`selinux_set_parameters',`
gen_require(`
type security_t;
attribute can_setsecparam;
')
dev_search_sysfs($1)
allow $1 security_t:dir list_dir_perms;
allow $1 security_t:file rw_file_perms;
allow $1 security_t:security setsecparam;
auditallow $1 security_t:security setsecparam;
typeattribute $1 can_setsecparam;
')

46
policy/modules/kernel/selinux.te
View File

@ -1,4 +1,4 @@
policy_module(selinux, 1.14.0)
policy_module(selinux, 1.14.1)
########################################
#
@ -36,10 +36,52 @@ sid security gen_context(system_u:object_r:security_t,mls_systemhigh)
genfscon selinuxfs / gen_context(system_u:object_r:security_t,s0)
genfscon securityfs / gen_context(system_u:object_r:security_t,s0)
neverallow ~{ selinux_unconfined_type can_load_policy } security_t:security load_policy;
########################################
#
# Controlled setenforce access
#
neverallow ~{ selinux_unconfined_type can_setenforce } security_t:security setenforce;
allow can_setenforce security_t:dir list_dir_perms;
allow can_setenforce security_t:file rw_file_perms;
dev_search_sysfs(can_setenforce)
if(!secure_mode_policyload) {
allow can_setenforce security_t:security setenforce;
}
########################################
#
# Controlled load_policy access
#
neverallow ~{ selinux_unconfined_type can_load_policy } security_t:security load_policy;
allow can_load_policy security_t:dir list_dir_perms;
allow can_load_policy security_t:file rw_file_perms;
dev_search_sysfs(can_load_policy)
if(!secure_mode_policyload) {
allow can_load_policy security_t:security load_policy;
}
########################################
#
# Controlled security parameters access
#
neverallow ~{ selinux_unconfined_type can_setsecparam } security_t:security setsecparam;
allow can_setsecparam security_t:dir list_dir_perms;
allow can_setsecparam security_t:file rw_file_perms;
allow can_setsecparam security_t:security setsecparam;
auditallow can_setsecparam security_t:security setsecparam;
dev_search_sysfs(can_setsecparam)
########################################
#
# Unconfined access to this module