Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 41.1%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
Products affected by CVE-2018-9127
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cpe:2.3:a:botan_project:botan:2.2.0
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cpe:2.3:a:botan_project:botan:2.3.0
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cpe:2.3:a:botan_project:botan:2.4.0