Critical severity · published Apr 8, 2020
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
9.8
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AN
Android · Google
7.0; 8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-21058
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-21058
Vendor Advisory
https://security.samsungmobile.com/securityUpdate.smsb
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