Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Botan Project | Botan | >= 2.2.0, <= 2.4.0 |
Related Weaknesses (CWE)
References
- https://botan.randombit.net/security.htmlThird Party Advisory
- https://botan.randombit.net/security.htmlThird Party Advisory
FAQ
What is CVE-2018-9127?
CVE-2018-9127 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2018-9127?
CVE-2018-9127 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-9127?
Check the references section above for vendor advisories and patch information. Affected products include: Botan Project Botan.