Apache Commons HttpClient 3.x, as used in Amazon Flexible Payments Service (FPS) merchant Java SDK and other products, does not verify that the server hostname matches a domain name in the subjects Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
The product does not validate, or incorrectly validates, a certificate.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Httpclient | Apache | 3.1 | 3.1 |