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cvelistGoogleCVELIST:CVE-2021-22552
HistoryJun 03, 2021 - 12:00 a.m.

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

2021-06-0300:00:00
CWE-126
Google
www.cve.org

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

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

5.6 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.8%

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

CNA Affected

[
  {
    "product": "Asylo",
    "vendor": "Google LLC",
    "versions": [
      {
        "lessThanOrEqual": "0.6.2",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

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

5.6 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.8%

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