VULNERABILITY INTELLIGENCE

CVE-2021-22552

CVSS score5.3 MEDIUM
EPSS probability0.15%
CISA KEVNot currently listed
Published2021-08-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

Description

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

Weakness classification

  • cve-coordination@google.com: CWE-126
  • nvd@nist.gov: CWE-125

Primary references