de8d85febb
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
216 lines
4.1 KiB
Plaintext
216 lines
4.1 KiB
Plaintext
## <summary>policy for frr</summary>
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########################################
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## <summary>
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## Execute frr_exec_t in the frr domain.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed to transition.
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## </summary>
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## </param>
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#
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interface(`frr_domtrans',`
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gen_require(`
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type frr_t, frr_exec_t;
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')
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corecmd_search_bin($1)
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domtrans_pattern($1, frr_exec_t, frr_t)
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')
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######################################
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## <summary>
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## Execute frr in the caller domain.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`frr_exec',`
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gen_require(`
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type frr_exec_t;
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')
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corecmd_search_bin($1)
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can_exec($1, frr_exec_t)
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')
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########################################
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## <summary>
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## Read frr's log files.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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## <rolecap/>
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#
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interface(`frr_read_log',`
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gen_require(`
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type frr_log_t;
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')
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read_files_pattern($1, frr_log_t, frr_log_t)
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optional_policy(`
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logging_search_logs($1)
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')
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')
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########################################
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## <summary>
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## Append to frr log files.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`frr_append_log',`
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gen_require(`
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type frr_log_t;
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')
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append_files_pattern($1, frr_log_t, frr_log_t)
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optional_policy(`
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logging_search_logs($1)
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')
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')
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########################################
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## <summary>
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## Manage frr log files
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`frr_manage_log',`
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gen_require(`
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type frr_log_t;
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')
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manage_dirs_pattern($1, frr_log_t, frr_log_t)
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manage_files_pattern($1, frr_log_t, frr_log_t)
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manage_lnk_files_pattern($1, frr_log_t, frr_log_t)
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optional_policy(`
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logging_search_logs($1)
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')
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')
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########################################
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## <summary>
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## Read frr PID files.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`frr_read_pid_files',`
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gen_require(`
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type frr_var_run_t;
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')
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files_search_pids($1)
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read_files_pattern($1, frr_var_run_t, frr_var_run_t)
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')
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########################################
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## <summary>
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## All of the rules required to administrate
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## an frr environment
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`frr_admin',`
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gen_require(`
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type frr_t;
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type frr_log_t;
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type frr_var_run_t;
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')
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allow $1 frr_t:process { signal_perms };
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ps_process_pattern($1, frr_t)
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tunable_policy(`deny_ptrace',`',`
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allow $1 frr_t:process ptrace;
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')
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admin_pattern($1, frr_log_t)
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files_search_pids($1)
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admin_pattern($1, frr_var_run_t)
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optional_policy(`
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logging_search_logs($1)
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')
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optional_policy(`
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systemd_passwd_agent_exec($1)
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systemd_read_fifo_file_passwd_run($1)
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')
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')
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########################################
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#
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# Interface compatibility blocks
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#
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# The following definitions ensure compatibility with distribution policy
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# versions that do not contain given interfaces (epel, or older Fedora
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# releases).
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# Each block tests for existence of given interface and defines it if needed.
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#
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######################################
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## <summary>
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## Watch ifconfig_var_run_t directories
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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ifndef(`sysnet_watch_ifconfig_run',`
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interface(`sysnet_watch_ifconfig_run',`
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gen_require(`
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type ifconfig_var_run_t;
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')
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watch_dirs_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
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')
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')
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########################################
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## <summary>
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## Read ifconfig_var_run_t files and link files
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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ifndef(`sysnet_read_ifconfig_run',`
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interface(`sysnet_read_ifconfig_run',`
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gen_require(`
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type ifconfig_var_run_t;
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')
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list_dirs_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
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read_files_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
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read_lnk_files_pattern($1, ifconfig_var_run_t, ifconfig_var_run_t)
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')
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')
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