CVE-2021-40831 Missing SNI validation and inconsistent CA override function behavior within AWS IoT Device SDKs on Apple devices

The AWS IoT Device SDK v2 for Java, Python, C++ and Node.js appends a user supplied Certificate Authority CA to the root CAs instead of overriding it on macOS systems. Additionally, SNI validation is also not enabled when the CA has been “overridden”. TLS handshakes will thus succeed if the peer...

CVE-2021-40831

The CVE-2021-40831 issue affects AWS IoT Device SDK v2 for Java, Python, C++ and Node.js on macOS. The product appends a user-supplied CA to the root trust store instead of overriding it, and SNI validation is not enabled when the CA is overridden. TLS handshakes may succeed if the peer is verifi...