[PATCH 1/1 v2] grant rpm_t permission to map security_t

[PATCH 1/1 v2] grant rpm_t permission to map security_t

[Sugar, David]

type=AVC msg=audit(1560944462.698:217): avc:  denied  { map } for pid=1265 comm="rpm" path="/sys/fs/selinux/status" dev="selinuxfs" ino=19 scontext=system_u:system_r:rpm_t:s0 tcontext=system_u:object_r:security_t:s0 tclass=file permissive=1

v2 - Create new interface to allow mapping security_t and use this interface by rpm_t

Signed-off-by: Dave Sugar <dsugar@tresys.com>
---
 policy/modules/admin/rpm.te      |  1 +
 policy/modules/kernel/selinux.if | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/policy/modules/admin/rpm.te b/policy/modules/admin/rpm.te
index 3c5968f9..082052fa 100644
--- a/policy/modules/admin/rpm.te
+++ b/policy/modules/admin/rpm.te
@@ -185,6 +185,7 @@ selinux_compute_access_vector(rpm_t)
 selinux_compute_create_context(rpm_t)
 selinux_compute_relabel_context(rpm_t)
 selinux_compute_user_contexts(rpm_t)
+selinux_map_security_files(rpm_t)
 
 storage_raw_write_fixed_disk(rpm_t)
 storage_raw_read_fixed_disk(rpm_t)
diff --git a/policy/modules/kernel/selinux.if b/policy/modules/kernel/selinux.if
index 6790e5d0..81d8f918 100644
--- a/policy/modules/kernel/selinux.if
+++ b/policy/modules/kernel/selinux.if
@@ -635,6 +635,26 @@ interface(`selinux_compute_user_contexts',`
 	allow $1 security_t:security compute_user;
 ')
 
+########################################
+## <summary>
+##	Allows caller to map secuirty_t files.
+## </summary>
+## <param name="domain">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+#
+
+interface(`selinux_map_security_files',`
+	gen_require(`
+		type security_t;
+	')
+
+	dev_search_sysfs($1)
+	allow $1 security_t:file map;
+')
+
 ########################################
 ## <summary>
 ##	Unconfined access to the SELinux kernel security server.
-- 
2.21.0

Re: [PATCH 1/1 v2] grant rpm_t permission to map security_t

[Chris PeBenito]

On 7/9/19 11:15 AM, Sugar, David wrote:
> type=AVC msg=audit(1560944462.698:217): avc:  denied  { map } for pid=1265 comm="rpm" path="/sys/fs/selinux/status" dev="selinuxfs" ino=19 scontext=system_u:system_r:rpm_t:s0 tcontext=system_u:object_r:security_t:s0 tclass=file permissive=1
> 
> v2 - Create new interface to allow mapping security_t and use this interface by rpm_t
> 
> Signed-off-by: Dave Sugar <dsugar@tresys.com>
> ---
>   policy/modules/admin/rpm.te      |  1 +
>   policy/modules/kernel/selinux.if | 20 ++++++++++++++++++++
>   2 files changed, 21 insertions(+)
> 
> diff --git a/policy/modules/admin/rpm.te b/policy/modules/admin/rpm.te
> index 3c5968f9..082052fa 100644
> --- a/policy/modules/admin/rpm.te
> +++ b/policy/modules/admin/rpm.te
> @@ -185,6 +185,7 @@ selinux_compute_access_vector(rpm_t)
>   selinux_compute_create_context(rpm_t)
>   selinux_compute_relabel_context(rpm_t)
>   selinux_compute_user_contexts(rpm_t)
> +selinux_map_security_files(rpm_t)
>   
>   storage_raw_write_fixed_disk(rpm_t)
>   storage_raw_read_fixed_disk(rpm_t)
> diff --git a/policy/modules/kernel/selinux.if b/policy/modules/kernel/selinux.if
> index 6790e5d0..81d8f918 100644
> --- a/policy/modules/kernel/selinux.if
> +++ b/policy/modules/kernel/selinux.if
> @@ -635,6 +635,26 @@ interface(`selinux_compute_user_contexts',`
>   	allow $1 security_t:security compute_user;
>   ')
>   
> +########################################
> +## <summary>
> +##	Allows caller to map secuirty_t files.
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain allowed access.
> +##	</summary>
> +## </param>
> +#
> +
> +interface(`selinux_map_security_files',`
> +	gen_require(`
> +		type security_t;
> +	')
> +
> +	dev_search_sysfs($1)
> +	allow $1 security_t:file map;
> +')
> +
>   ########################################
>   ## <summary>
>   ##	Unconfined access to the SELinux kernel security server.

Merged.

-- 
Chris PeBenito