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

5.3MEDIUM

Key Information:

Vendor
Google
Status
Asylo
Vendor
CVE Published:
15 December 2020

Summary

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.

Affected Version(s)

Asylo 0.6.0

References

https://github.com/google/asylo/commit/83036fd841d33baa7e...
x_refsource_CONFIRM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database

Credit

Qinkun Bao (Baidu Security)
Zhaofeng Chen (Baidu Security)
Mingshen Sun (Baidu Security)
Kang Li (Baidu Security)
.