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mod_s2s_keysize_policy/mod_s2s_keysize_policy.lua @ 5549:01a0b67a9afd
mod_http_oauth2: Add TODO about disabling password grant
Per recommendation in draft-ietf-oauth-security-topics-23 it should at
the very least be disabled by default.
However since this is used by the Snikket web portal some care needs to
be taken not to break this, unless it's already broken by other changes
to this module.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Fri, 16 Jun 2023 00:06:53 +0200 |
parent | 2424:27ffa6521d4e |
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-- mod_s2s_keysize_policy.lua -- Requires LuaSec with this patch: https://github.com/brunoos/luasec/pull/12 module:set_global(); local datetime_parse = require"util.datetime".parse; local pat = "^([JFMAONSD][ceupao][glptbvyncr]) ?(%d%d?) (%d%d):(%d%d):(%d%d) (%d%d%d%d) GMT$"; local months = {Jan=1,Feb=2,Mar=3,Apr=4,May=5,Jun=6,Jul=7,Aug=8,Sep=9,Oct=10,Nov=11,Dec=12}; local function parse_x509_datetime(s) local month, day, hour, min, sec, year = s:match(pat); month = months[month]; return datetime_parse(("%04d-%02d-%02dT%02d:%02d:%02dZ"):format(year, month, day, hour, min, sec)); end local weak_key_cutoff = datetime_parse("2014-01-01T00:00:00Z"); -- From RFC 4492 local weak_key_size = { RSA = 2048, DSA = 2048, DH = 2048, EC = 233, } module:hook("s2s-check-certificate", function(event) local host, session, cert = event.host, event.session, event.cert; if cert and cert.pubkey then local _, key_type, key_size = cert:pubkey(); if key_size < ( weak_key_size[key_type] or 0 ) then local issued = parse_x509_datetime(cert:notbefore()); if issued > weak_key_cutoff then session.log("warn", "%s has a %s-bit %s key issued after 31 December 2013, invalidating trust!", host, key_size, key_type); session.cert_chain_status = "invalid"; session.cert_identity_status = "invalid"; else session.log("warn", "%s has a %s-bit %s key", host, key_size, key_type); end else session.log("info", "%s has a %s-bit %s key", host, key_size, key_type); end end end);