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Fraser Tweedale
61e1d7a83b
When verifying a CA certificate, validate its signature. This causes FreeIPA to reject certificate chains with bad signatures, signatures using unacceptable algorithms, or certificates with unacceptable key sizes. The '-e' option to 'certutil -V' was the missing ingredient. An an example of a problem prevented by this change, a certifiate signed by a 1024-bit intermediate CA, would previously have been imported by ipa-cacert-manage, but would cause Dogtag startup failure due to failing self-test. With this change, ipa-cacert-manage will reject the certificate: # ipa-cacert-manage renew --external-cert-file /tmp/ipa.p7 Importing the renewed CA certificate, please wait CA certificate CN=Certificate Authority,O=IPA.LOCAL 201809261455 in /tmp/ipa.p7 is not valid: certutil: certificate is invalid: The certificate was signed using a signature algorithm that is disabled because it is not secure. Fixes: https://pagure.io/freeipa/issue/7761 Reviewed-By: Christian Heimes <cheimes@redhat.com>
This is a set of libraries common to IPA clients and servers though mostly
geared currently towards command-line tools.
A brief overview:
config.py - identify the IPA server domain and realm. It uses python-dns to
try to detect this information first and will fall back to
/etc/ipa/default.conf if that fails.
ipautil.py - helper functions
entity.py - entity is the main data type. User and Group extend this class
(but don't add anything currently).
ipavalidate.py - basic data validation routines