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Allow ssh generator work with systemd unit files #2510

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merged 3 commits into from
Jan 8, 2025
Merged

Allow ssh generator work with systemd unit files #2510

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fccee97
Allow ssh generator work with systemd unit files
zpytela Jan 8, 2025
043d509
Support ssh connections via systemd-ssh-generator
zpytela Nov 8, 2024
7808e39
Allow init create vsock socket for sshd
zpytela Jan 8, 2025
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18 changes: 18 additions & 0 deletions policy/modules/services/ssh.if
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Original file line number Diff line number Diff line change
Expand Up @@ -1166,3 +1166,21 @@ interface(`ssh_getattr_unit_file',`
systemd_search_unit_dirs($1)
allow $1 sshd_unit_file_t:file getattr_file_perms;
')

#######################################
## <summary>
## Allow caller to create vsock socket for sshd
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`ssh_create_vsock_socket',`
gen_require(`
type sshd_t;
')

allow $1 sshd_t:vsock_socket create_stream_socket_perms;
')
3 changes: 3 additions & 0 deletions policy/modules/services/ssh.te
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Expand Up @@ -320,6 +320,7 @@ optional_policy(`
allow sshd_t self:netlink_route_socket r_netlink_socket_perms;
allow sshd_t self:key { search link write };
allow sshd_t self:process setcurrent;
allow sshd_t self:vsock_socket rw_socket_perms;

allow sshd_t sshd_keytab_t:file read_file_perms;

Expand Down Expand Up @@ -642,6 +643,8 @@ logging_send_audit_msgs(sshd_sandbox_t)
# sshd [net] child local policy
#

allow sshd_net_t sshd_t:vsock_socket rw_socket_perms;

allow sshd_t sshd_net_t:process signal;

allow sshd_net_t self:process setrlimit;
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1 change: 1 addition & 0 deletions policy/modules/system/init.te
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Expand Up @@ -854,6 +854,7 @@ optional_policy(`

optional_policy(`
ssh_getattr_server_keys(init_t)
ssh_create_vsock_socket(init_t)
')

optional_policy(`
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1 change: 1 addition & 0 deletions policy/modules/system/systemd.te
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Expand Up @@ -1293,6 +1293,7 @@ init_exec_script_files(systemd_rc_local_generator_t)
### ssh generator
allow systemd_ssh_generator_t self:vsock_socket create;
allow systemd_ssh_generator_t vsock_device_t:chr_file { read_chr_file_perms };
allow systemd_ssh_generator_t systemd_unit_file_t:file { create_file_perms rw_file_perms };

kernel_read_sysctl(systemd_ssh_generator_t)

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