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frr-8.5.1-4

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Selinux policy changes:
- Allow watch,read on /var/run/netns directory and its content
- Add sys_admin capability

It seems like sys_admin is needed because frr is using setns function to change the actual namespace. Full log here:
type=PROCTITLE msg=audit(06/29/2023 03:42:07.692:559) : proctitle=/usr/libexec/frr/zebra -d -F traditional -A 127.0.0.1 -s 90000000 -n
type=SYSCALL msg=audit(06/29/2023 03:42:07.692:559) : arch=x86_64 syscall=setns success=no exit=EPERM(Operation not permitted) a0=0x11 a1=CLONE_NEWNET a2=0x0 a3=0x0 items=0 ppid=3692 pid=3701 auid=unset uid=frr gid=frr euid=frr suid=frr fsuid=frr egid=frr sgid=frr fsgid=frr tty=(none) ses=unset comm=zebra exe=/usr/libexec/frr/zebra subj=system_u:system_r:frr_t:s0 key=(null)
type=AVC msg=audit(06/29/2023 03:42:07.692:559) : avc: denied { sys_admin } for pid=3701 comm=zebra capability=sys_admin scontext=system_u:system_r:frr_t:s0 tcontext=system_u:system_r:frr_t:s0 tclass=capability permissive=0

Resolves: #2216073 - SELinux is preventing FRR-Zebra to access to network namespaces
This commit is contained in:
Michal Ruprich 2023-06-26 16:55:14 +02:00 committed by Vit Mojzis
parent 7f0775ec07
commit de8d85febb
3 changed files with 60 additions and 2 deletions
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53
frr.if
View File

@ -160,3 +160,56 @@ interface(`frr_admin',`
systemd_read_fifo_file_passwd_run($1)
')
')
########################################
#
# Interface compatibility blocks
#
# The following definitions ensure compatibility with distribution policy
# versions that do not contain given interfaces (epel, or older Fedora
# releases).
# Each block tests for existence of given interface and defines it if needed.
#
######################################
## <summary>
## Watch ifconfig_var_run_t directories
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
ifndef(`sysnet_watch_ifconfig_run',`
interface(`sysnet_watch_ifconfig_run',`
gen_require(`
type ifconfig_var_run_t;
')
watch_dirs_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
')
')
########################################
## <summary>
## Read ifconfig_var_run_t files and link files
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
ifndef(`sysnet_read_ifconfig_run',`
interface(`sysnet_read_ifconfig_run',`
gen_require(`
type ifconfig_var_run_t;
')
list_dirs_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
read_files_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
read_lnk_files_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
')
')

5
frr.spec
View File

@ -9,7 +9,7 @@
Name: frr
Version: 8.5.1
Release: 3%{?dist}
Release: 4%{?dist}
Summary: Routing daemon
License: GPL-2.0-or-later AND ISC AND LGPL-2.0-or-later AND BSD-2-Clause AND BSD-3-Clause AND (GPL-2.0-or-later OR ISC) AND MIT
URL: http://www.frrouting.org
@ -273,6 +273,9 @@ rm tests/lib/*grpc*
%endif
%changelog
* Mon Jun 26 2023 Michal Ruprich <mruprich@redhat.com> - 8.5.1-4
- Resolves: #2216073 - SELinux is preventing FRR-Zebra to access to network namespaces.
* Mon Jun 05 2023 Yaakov Selkowitz <yselkowi@redhat.com> - 8.5.1-3
- Disable grpc in RHEL builds

4
frr.te
View File

@ -31,7 +31,7 @@ files_pid_file(frr_var_run_t)
#
# frr local policy
#
allow frr_t self:capability { chown dac_override dac_read_search kill net_bind_service net_raw setgid setuid net_admin };
allow frr_t self:capability { chown dac_override dac_read_search kill net_bind_service net_raw setgid setuid net_admin sys_admin };
allow frr_t self:netlink_route_socket rw_netlink_socket_perms;
allow frr_t self:packet_socket { create setopt };
allow frr_t self:process { setcap setpgid };
@ -97,6 +97,8 @@ domain_use_interactive_fds(frr_t)
fs_read_nsfs_files(frr_t)
sysnet_exec_ifconfig(frr_t)
sysnet_read_ifconfig_run(frr_t)
sysnet_watch_ifconfig_run(frr_t)
userdom_read_admin_home_files(frr_t)