Description
CyaSSL does not check the key usage extension in leaf certificates, which allows remote attackers to spoof servers via a crafted server certificate not authorized for use in an SSL/TLS handshake.
Metrics
CVSS 3.0 5.9/10
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://secunia.com/advisories/62604Permissions Required, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2014/04/18/2Mailing List, Third Party Advisory
- http://secunia.com/advisories/62604Permissions Required, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2014/04/18/2Mailing List, Third Party Advisory
Timeline
- Published
- Oct 6, 2017
- Last modified
- Jun 17, 2026
- NVD status
- Modified