CVE-2018-9127

Botan 2.2.0 - 2.4.0 (fixed in 2.5.0) improperly handled wildcard
certificates and could accept certain certificates as valid for hostnames
when, under RFC 6125 rules, they should not match. This only affects
certificates issued to the same domain as the host, so to impersonate a
host one must already have a wildcard certificate matching other hosts in
the same domain. For example, b*.example.com would match some hostnames
that do not begin with a ‘b’ character.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894648&gt;