CVE-2020-8904

Arbitrary trusted memory overwrite vulnerability in Asylo

State: Published
Severity: 6.4 Medium
Published: Aug 12, 2020
Updated: Sep 16, 2024
Reserved: Feb 12, 2020

Description

An arbitrary memory overwrite vulnerability in the trusted memory of Asylo exists in versions prior to 0.6.0. As the ecall_restore function fails to validate the range of the output_len pointer, an attacker can manipulate the tmp_output_len value and write to an arbitrary location in the trusted (enclave) memory. We recommend updating Asylo to version 0.6.0 or later.

Scores

CVSS	Score	Vector	Source
3.1	6.4 Medium	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H	Google

Weaknesses

CWE-823 Use of Out-of-range Pointer Offset

Affected Products

Product	Versions
AsyloGoogle LLC	stable to before 0.6.0Affected

References

https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e

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