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 sgx_params and allowed the host to return a pointer that was an address within the enclave memory. This allowed an attacker to read memory values from within the enclave.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

跨界内存读

Google Asylo 缓冲区错误漏洞

Google Asylo是美国Google公司的一个用于开发可信应用程序的框架。该软件支持创建一个可信任的执行环境，包括软件隔离和硬件隔离。 Google Asylo 版本 0.6.0 存在缓冲区错误漏洞，该漏洞源于任意内存覆盖漏洞允许攻击者可利用该漏洞对UntrustedCall进行主机调用。UntrustedCall未能验证sgx参数内的缓冲区范围，并允许主机返回一个指针，该指针是enclave内存中的一个地址。这允许攻击者可利用该漏洞从enclave内读取内存值。

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