prosody
53e0ae770917
certs/openssl.cnf
Software / code / prosody
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certs/openssl.cnf @ 12180:53e0ae770917
util.xml: Do not allow doctypes, comments or processing instructions
Yes. This is as bad as it sounds. CVE pending.
In Prosody itself, this only affects mod_websocket, which uses util.xml
to parse the <open/> frame, thus allowing unauthenticated remote DoS
using Billion Laughs. However, third-party modules using util.xml may
also be affected by this.
This commit installs handlers which disallow the use of doctype
declarations and processing instructions without any escape hatch. It,
by default, also introduces such a handler for comments, however, there
is a way to enable comments nontheless.
This is because util.xml is used to parse human-facing data, where
comments are generally a desirable feature, and also because comments
are generally harmless.
| author | Jonas Schäfer <jonas@wielicki.name> |
|---|---|
| date | Mon, 10 Jan 2022 18:23:54 +0100 |
| parent | 6922:e0672860d208 |
| child | 12604:bd9e006a7a74 |
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oid_section = new_oids [ new_oids ] # RFC 6120 section 13.7.1.4. defines this OID xmppAddr = 1.3.6.1.5.5.7.8.5 # RFC 4985 defines this OID SRVName = 1.3.6.1.5.5.7.8.7 [ req ] default_bits = 4096 default_keyfile = example.com.key distinguished_name = distinguished_name req_extensions = certrequest x509_extensions = selfsigned # ask about the DN? prompt = no [ distinguished_name ] commonName = example.com countryName = GB localityName = The Internet organizationName = Your Organisation organizationalUnitName = XMPP Department emailAddress = xmpp@example.com [ certrequest ] # for certificate requests (req_extensions) basicConstraints = CA:FALSE keyUsage = digitalSignature,keyEncipherment extendedKeyUsage = serverAuth,clientAuth subjectAltName = @subject_alternative_name [ selfsigned ] # and self-signed certificates (x509_extensions) basicConstraints = CA:TRUE subjectAltName = @subject_alternative_name [ subject_alternative_name ] # See http://tools.ietf.org/html/rfc6120#section-13.7.1.2 for more info. DNS.0 = example.com otherName.0 = xmppAddr;FORMAT:UTF8,UTF8:example.com otherName.1 = SRVName;IA5STRING:_xmpp-client.example.com otherName.2 = SRVName;IA5STRING:_xmpp-server.example.com DNS.1 = conference.example.com otherName.3 = xmppAddr;FORMAT:UTF8,UTF8:conference.example.com otherName.4 = SRVName;IA5STRING:_xmpp-server.conference.example.com
