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deny the IPv6 unspecified address at squid

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This commit is contained in:
atlas 2026-10-28 14:27:43 +01:00 • committed by mara
commit e8868d52a8
3 changed files with 13 additions and 4 deletions
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7
nix/host-modules/hive-squid.nix
View file

@ -35,6 +35,10 @@ let
# bridge, and the private, shared (CGNAT), unspecified, multicast and
# reserved ranges. Squid checks the address it connects to, so a name an
# agent controls cannot point past them.
# `::` is listed because a connect to it lands on loopback; squid's
# built-in `to_localhost` has `0.0.0.0/32` and `::1` but not `::`. NAT64
# (`64:ff9b::/96`) and 6to4 (`2002::/16`) embed IPv4 addresses and are left
# out: they matter only on a host with such a route.
privateRanges = [
"10.0.0.0/8"
"172.16.0.0/12"
@ -45,6 +49,7 @@ let
"240.0.0.0/4"
"fc00::/7"
"ff00::/8"
"::/128"
];
# Evaluated top to bottom, first match wins. The destination denies sit
@ -206,7 +211,7 @@ in
for an unrestricted user. The self-check canary is allowed on top of
this list. A name must resolve, on this host's resolver, to a public
address: one in a loopback, link-local, private, shared (100.64.0.0/10),
multicast or reserved range, or in the bridge subnet, gets a 403 for
multicast or reserved range (or is `::`), or in the bridge subnet, gets a 403 for
every user.
'';
};

1
nix/module-eval/hive-otel.nix
View file

@ -550,6 +550,7 @@ let
"240.0.0.0/4"
"fc00::/7"
"ff00::/8"
"::/128"
];
}
{

7
nix/vm-tests/hive-squid.nix
View file

@ -120,9 +120,10 @@ pkgs.testers.runNixOSTest {
imports = [
hiveStubs
../host-modules/hive-squid.nix
# Listeners a leaked destination would reach: loopback and the bridge.
# Listeners a leaked destination would reach: loopback (`::` lands on `::1`) and the bridge.
(listen443 [
"127.0.0.1"
"[::1]"
bridgeIp
])
];
@ -157,6 +158,7 @@ pkgs.testers.runNixOSTest {
${bridgeIp} = [ "bridge.t.local" ];
"169.254.169.254" = [ "meta.t.local" ];
"fd00:99::2" = [ "ula.t.local" ];
"::" = [ "any6.t.local" ];
}
// lib.listToAttrs (
map (p: {
@ -173,6 +175,7 @@ pkgs.testers.runNixOSTest {
"bridge.t.local"
"meta.t.local"
"ula.t.local"
"any6.t.local"
]
++ map (p: p.name) privateNets;
};
@ -242,7 +245,7 @@ pkgs.testers.runNixOSTest {
web.wait_for_unit("nginx.service")
proxy.wait_for_open_port(3128, "${bridgeIp}")
PRIVATE = ["priv10.t.local", "priv172.t.local", "priv192.t.local", "cgnat.t.local", "ula.t.local"]
PRIVATE = ["priv10.t.local", "priv172.t.local", "priv192.t.local", "cgnat.t.local", "ula.t.local", "any6.t.local"]
def connect(host, cred=None):
# The status squid answered the CONNECT with; 000 when none came back.