CVE-2020-8936 Arbitrary enclave memory overwrite vulnerability in ECall ecall_restore

An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to UntrustedCall. UntrustedCall failed to validate the buffer range within sgxparams and allowed the host to return a pointer that was an address within the enclave memory. This allowe...