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CRITICAL · 9.8

CVE-2018-21058

An issue was discovered on Samsung mobile devices with N(7.0), O(8.0) (exynos7420 or Exynos 8890/8996 chipsets) software. Cache attacks can occur against the Keymaster AES-GCM implementation because T...

Vulnerability Description

An issue was discovered on Samsung mobile devices with N(7.0), O(8.0) (exynos7420 or Exynos 8890/8996 chipsets) software. Cache attacks can occur against the Keymaster AES-GCM implementation because T-Tables are used; the Cryptography Extension (CE) is not used. The Samsung ID is SVE-2018-12761 (September 2018).

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
GoogleAndroid7.0
SamsungExynos 7420-
SamsungExynos 8890-
SamsungExynos 8996-

Related Weaknesses (CWE)

CWE-327

References

FAQ

What is CVE-2018-21058?

CVE-2018-21058 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered on Samsung mobile devices with N(7.0), O(8.0) (exynos7420 or Exynos 8890/8996 chipsets) software. Cache attacks can occur against the Keymaster AES-GCM implementation because T...

How severe is CVE-2018-21058?

CVE-2018-21058 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2018-21058?

Check the references section above for vendor advisories and patch information. Affected products include: Google Android, Samsung Exynos 7420, Samsung Exynos 8890, Samsung Exynos 8996.