[RRRA]

Are any OpenSSL fork vulnerable in the same way?

[Titanous]

No. Both BoringSSL and LibreSSL use substantially different (and safer) systems for their CSPRNG.

https://boringssl.googlesource.com/boringssl.git/+/refs/head...

https://github.com/libressl-portable/openbsd/blob/master/src...