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.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2018-04-02T17:00:00

Updated: 2024-08-05T07:17:51.054Z

Reserved: 2018-03-29T00:00:00

Link: CVE-2018-9127

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2018-04-02T17:29:00.387

Modified: 2018-05-15T16:16:04.013

Link: CVE-2018-9127

cve-icon Redhat

No data.