2019-02-18 15:15:07

by Sugar, David

Subject: [PATCH] Allow init_t to read net_conf_t

init (systemd) needs to read /etc/hostname during boot
to retreive the hostname to apply to the system.

Feb 06 18:37:06 localhost.localdomain kernel: type=1400 audit(1549478223.842:3): avc: denied { read } for pid=1 comm="systemd" name="hostname" dev="dm-1" ino=1262975 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:net_conf_t:s0 tclass=file permissive=0

Signed-off-by: Dave Sugar <[email protected]>
---
policy/modules/system/init.te | 2 ++
1 file changed, 2 insertions(+)

diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te
index eabba1ed..735a3b81 100644
--- a/policy/modules/system/init.te
+++ b/policy/modules/system/init.te
@@ -409,6 +409,8 @@ ifdef(`init_systemd',`
# lvm2-activation-generator checks file labels
seutil_read_file_contexts(init_t)

+ sysnet_read_config(init_t)
+
systemd_getattr_updated_runtime(init_t)
systemd_manage_passwd_runtime_symlinks(init_t)
systemd_use_passwd_agent(init_t)
--
2.20.1

2019-02-18 15:15:20

by Sugar, David

Subject: [PATCH] Allow systemd-hostnamed to set the hostname

When calling hostnamectl to set the hostname it needs sys_admin
capability to actually set the hostname.

Feb 13 11:47:14 localhost.localdomain systemd-hostnamed[7221]: Failed to set host name: Operation not permitted
type=AVC msg=audit(1550058524.656:1988): avc: denied { sys_admin } for pid=7873 comm="systemd-hostnam" capability=21 scontext=system_u:system_r:systemd_hostnamed_t:s0 tcontext=system_u:system_r:systemd_hostnamed_t:s0 tclass=capability permissive=0

Signed-off-by: Dave Sugar <[email protected]>
---
policy/modules/system/systemd.te | 2 ++
1 file changed, 2 insertions(+)

diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te
index 2b25a7d5..b88bf232 100644
--- a/policy/modules/system/systemd.te
+++ b/policy/modules/system/systemd.te
@@ -331,6 +331,8 @@ seutil_search_default_contexts(systemd_coredump_t)
# Hostnamed policy
#

+allow systemd_hostnamed_t self:capability { sys_admin };
+
kernel_read_kernel_sysctls(systemd_hostnamed_t)

dev_read_sysfs(systemd_hostnamed_t)
--
2.20.1

2019-02-20 03:31:47

by Chris PeBenito

Subject: Re: [PATCH] Allow systemd-hostnamed to set the hostname

On Mon, 2019-02-18 at 15:15 +0000, Sugar, David wrote:
> When calling hostnamectl to set the hostname it needs sys_admin
> capability to actually set the hostname.
>
> Feb 13 11:47:14 localhost.localdomain systemd-hostnamed[7221]: Failed
> to set host name: Operation not permitted
> type=AVC msg=audit(1550058524.656:1988): avc: denied { sys_admin }
> for pid=7873 comm="systemd-hostnam"
> capability=21 scontext=system_u:system_r:systemd_hostnamed_t:s0
> tcontext=system_u:system_r:systemd_hostnamed_t:s0 tclass=capability
> permissive=0
>
> Signed-off-by: Dave Sugar <[email protected]>
> ---
> policy/modules/system/systemd.te | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/policy/modules/system/systemd.te
> b/policy/modules/system/systemd.te
> index 2b25a7d5..b88bf232 100644
> --- a/policy/modules/system/systemd.te
> +++ b/policy/modules/system/systemd.te
> @@ -331,6 +331,8 @@
> seutil_search_default_contexts(systemd_coredump_t)
> # Hostnamed policy
> #
>
> +allow systemd_hostnamed_t self:capability { sys_admin };
> +
> kernel_read_kernel_sysctls(systemd_hostnamed_t)
>
> dev_read_sysfs(systemd_hostnamed_t)

Merged.

--
Chris PeBenito

2019-02-20 03:31:52

by Chris PeBenito

Subject: Re: [PATCH] Allow init_t to read net_conf_t

On Mon, 2019-02-18 at 15:15 +0000, Sugar, David wrote:
> init (systemd) needs to read /etc/hostname during boot
> to retreive the hostname to apply to the system.
>
> Feb 06 18:37:06 localhost.localdomain kernel: type=1400
> audit(1549478223.842:3): avc: denied { read } for pid=1
> comm="systemd" name="hostname" dev="dm-1" ino=1262975
> scontext=system_u:system_r:init_t:s0
> tcontext=system_u:object_r:net_conf_t:s0 tclass=file permissive=0
>
> Signed-off-by: Dave Sugar <[email protected]>
> ---
> policy/modules/system/init.te | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/policy/modules/system/init.te
> b/policy/modules/system/init.te
> index eabba1ed..735a3b81 100644
> --- a/policy/modules/system/init.te
> +++ b/policy/modules/system/init.te
> @@ -409,6 +409,8 @@ ifdef(`init_systemd',`
> # lvm2-activation-generator checks file labels
> seutil_read_file_contexts(init_t)
>
> + sysnet_read_config(init_t)
> +
> systemd_getattr_updated_runtime(init_t)
> systemd_manage_passwd_runtime_symlinks(init_t)
> systemd_use_passwd_agent(init_t)

Merged.

--
Chris PeBenito