CVEvulnerability

CVE-2018-9127

9.8 CRITICAL Published 2018-04-02 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-04-02
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
9.8 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-295

Description

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.

Affected configurations

• botan project botan (>= 2.2.0 <= 2.4.0)

Related

Weakness · CWE (1)

  • CWE-295 Improper Certificate Validation weakness

References