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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | wolfssl | 3.4.8+dfsg-1 | — |
| Debian 12 | wolfssl | 3.4.8+dfsg-1 | — |
References
- 62604 third-party-advisory
- [oss-security] 20140418 Re: CVE ids for CyaSSL 2.9.4? mailing-list