CVE-2021-22552 MEDIUM

CVE-2021-22552: Memory overread secure enclave in Asylo 0.6.2

Vendor Google Llc
Product Asylo
Weakness CWE-126
Published August 2, 2021
Last update September 17, 2024

CVSS base score

5.3/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

An untrusted memory read vulnerability in Asylo versions up to 0.6.1 allows an untrusted attacker to pass a syscall number in MessageReader that is then used by sysno() and can bypass validation. This can allow the attacker to read memory from within the secure enclave. We recommend updating to Asylo 0.6.3 or past https://github.com/google/asylo/commit/90d7619e9dd99bcdb6cd28c7649d741d254d9a1a

Key dates

02Disclosure timeline

August 2, 2021 CVE published
September 17, 2024 Record updated