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selinux: Allow read access to /proc/sys/net/ipv4/ip_local_port_range

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Since commit eedc81b6ef ("fwd, conf: Probe host's ephemeral ports"),
we might need to read from /proc/sys/net/ipv4/ip_local_port_range in
both passt and pasta.

While pasta was already allowed to open and write /proc/sys/net
entries, read access was missing in SELinux's type enforcement: add
that.

In passt, instead, this is the first time we need to access an entry
there: add everything we need.

Fixes: eedc81b6ef ("fwd, conf: Probe host's ephemeral ports")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2024-09-06 15:19:20 +02:00
parent a33ecafbd9
commit 116bc8266d
2 changed files with 4 additions and 1 deletions
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3
contrib/selinux/passt.te
View file

@ -50,6 +50,7 @@ require {
type passwd_file_t; type passwd_file_t;
class netlink_route_socket { bind create nlmsg_read }; class netlink_route_socket { bind create nlmsg_read };
type sysctl_net_t;
class capability { sys_tty_config setuid setgid }; class capability { sys_tty_config setuid setgid };
class cap_userns { setpcap sys_admin sys_ptrace }; class cap_userns { setpcap sys_admin sys_ptrace };
@ -104,6 +105,8 @@ allow passt_t net_conf_t:lnk_file read;
allow passt_t tmp_t:sock_file { create unlink write }; allow passt_t tmp_t:sock_file { create unlink write };
allow passt_t self:netlink_route_socket { bind create nlmsg_read read write setopt }; allow passt_t self:netlink_route_socket { bind create nlmsg_read read write setopt };
kernel_search_network_sysctl(passt_t) kernel_search_network_sysctl(passt_t)
allow passt_t sysctl_net_t:dir search;
allow passt_t sysctl_net_t:file { open read };
corenet_tcp_bind_all_nodes(passt_t) corenet_tcp_bind_all_nodes(passt_t)
corenet_udp_bind_all_nodes(passt_t) corenet_udp_bind_all_nodes(passt_t)

2
contrib/selinux/pasta.te
View file

@ -196,7 +196,7 @@ allow pasta_t ifconfig_var_run_t:dir { read search watch };
allow pasta_t self:tun_socket create; allow pasta_t self:tun_socket create;
allow pasta_t tun_tap_device_t:chr_file { ioctl open read write }; allow pasta_t tun_tap_device_t:chr_file { ioctl open read write };
allow pasta_t sysctl_net_t:dir search; allow pasta_t sysctl_net_t:dir search;
allow pasta_t sysctl_net_t:file { open write }; allow pasta_t sysctl_net_t:file { open read write };
allow pasta_t kernel_t:system module_request; allow pasta_t kernel_t:system module_request;
allow pasta_t nsfs_t:file read; allow pasta_t nsfs_t:file read;