"Sugar, David" <dsugar@xxxxxxxxxx> writes:
> These are changes needed when pam_fallock creates files in /run/faillock
> (which is labeled faillog_t). sudo and xdm (and probably other domains)
> will create files in this directory for successful and failed login
> attempts.
>
> type=AVC msg=audit(1545153126.899:210): avc: denied { search } for pid=8448 comm="lightdm" name="faillock" dev="tmpfs" ino=39318 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=dir permissive=1
> type=AVC msg=audit(1545153131.090:214): avc: denied { write } for pid=8448 comm="lightdm" name="faillock" dev="tmpfs" ino=39318 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=dir permissive=1
> type=AVC msg=audit(1545153131.090:214): avc: denied { add_name } for pid=8448 comm="lightdm" name="dsugar" scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=dir permissive=1
> type=AVC msg=audit(1545153131.090:214): avc: denied { create } for pid=8448 comm="lightdm" name="dsugar" scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=file permissive=1
> type=AVC msg=audit(1545153131.091:215): avc: denied { setattr } for pid=8448 comm="lightdm" name="dsugar" dev="tmpfs" ino=87599 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=file permissive=1
>
> type=AVC msg=audit(1545167205.531:626): avc: denied { search } for pid=8264 comm="sudo" name="faillock" dev="tmpfs" ino=35405 scontext=sysadm_u:sysadm_r:cleaner_applyconfig_sudo_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=dir permissive=1
> type=AVC msg=audit(1545167205.531:627): avc: denied { write } for pid=8264 comm="sudo" name="faillock" dev="tmpfs" ino=35405 scontext=sysadm_u:sysadm_r:cleaner_applyconfig_sudo_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=dir permissive=1
> type=AVC msg=audit(1545167205.531:627): avc: denied { add_name } for pid=8264 comm="sudo" name="root" scontext=sysadm_u:sysadm_r:cleaner_applyconfig_sudo_t:s0-s0:c0.c1023 tcontext=system_u:object_r:faillog_t:s0 tclass=dir permissive=1
> type=AVC msg=audit(1545167205.531:627): avc: denied { create } for pid=8264 comm="sudo" name="root" scontext=sysadm_u:sysadm_r:cleaner_applyconfig_sudo_t:s0-s0:c0.c1023 tcontext=sysadm_u:object_r:faillog_t:s0 tclass=file permissive=1
>
> Signed-off-by: Dave Sugar <dsugar@xxxxxxxxxx>
> ---
> policy/modules/admin/sudo.if | 2 +-
> policy/modules/services/xserver.te | 1 -
> policy/modules/system/authlogin.if | 21 +++++++++++++++++++++
> 3 files changed, 22 insertions(+), 2 deletions(-)
>
> diff --git a/policy/modules/admin/sudo.if b/policy/modules/admin/sudo.if
> index 01f408ef..1c1fbe7b 100644
> --- a/policy/modules/admin/sudo.if
> +++ b/policy/modules/admin/sudo.if
> @@ -116,8 +116,8 @@ template(`sudo_role_template',`
> auth_run_chk_passwd($1_sudo_t, $2)
> # sudo stores a token in the pam_pid directory
> auth_manage_pam_pid($1_sudo_t)
> + auth_use_pam($1_sudo_t)
> auth_pid_filetrans_pam_var_run($1_sudo_t, dir, "sudo")
> - auth_use_nsswitch($1_sudo_t)
>
> init_rw_utmp($1_sudo_t)
>
> diff --git a/policy/modules/services/xserver.te b/policy/modules/services/xserver.te
> index cc717e7f..37fb2a71 100644
> --- a/policy/modules/services/xserver.te
> +++ b/policy/modules/services/xserver.te
> @@ -484,7 +484,6 @@ term_setattr_unallocated_ttys(xdm_t)
> auth_domtrans_pam_console(xdm_t)
> auth_manage_pam_pid(xdm_t)
> auth_manage_pam_console_data(xdm_t)
> -auth_rw_faillog(xdm_t)
> auth_write_login_records(xdm_t)
>
> # Run telinit->init to shutdown.
> diff --git a/policy/modules/system/authlogin.if b/policy/modules/system/authlogin.if
> index 9b5e0fe0..8d79af78 100644
> --- a/policy/modules/system/authlogin.if
> +++ b/policy/modules/system/authlogin.if
> @@ -47,6 +47,7 @@ interface(`auth_use_pam',`
> # for encrypted homedir
> dev_read_sysfs($1)
>
> + auth_create_faillog($1)
auth_create_faillog_files($1)
auth_rw_faillog($1)
auth_setattr_faillog_files($1)
> auth_domtrans_chk_passwd($1)
> auth_domtrans_upd_passwd($1)
> auth_dontaudit_read_shadow($1)
> @@ -744,6 +745,26 @@ interface(`auth_append_faillog',`
> allow $1 faillog_t:file append_file_perms;
> ')
>
> +########################################
> +## <summary>
> +## Create fail log lock (in /run/faillock).
> +## </summary>
> +## <param name="domain">
> +## <summary>
> +## Domain allowed access.
> +## </summary>
> +## </param>
> +#
> +interface(`auth_create_faillog',`
> + gen_require(`
> + type faillog_t;
> + ')
> +
> + auth_rw_faillog($1)
> + create_files_pattern($1, faillog_t, faillog_t)
> + setattr_files_pattern($1, faillog_t, faillog_t)
> +')
interface name is not accurate: auth_create_faillog_files()
auth_rw_faillog does not belong here
setattr needs a seperate interface: auth_setattr_faillog_files()
> +
> ########################################
> ## <summary>
> ## Read and write the login failure log.
--
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Dominick Grift
