PT-2020-8702 · Samsung · Samsung Mobile Devices With N(7.0)+1

Published 2020-04-08 · Updated 2020-04-13 · CVE-2018-21058

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Samsung mobile devices with N(7.0) software Samsung mobile devices with O(8.0) software

Description An issue was discovered on Samsung mobile devices, where cache attacks can occur against the Keymaster AES-GCM implementation because T-Tables are used and the Cryptography Extension (CE) is not used.

Recommendations For Samsung mobile devices with N(7.0) software, update to a version that uses the Cryptography Extension (CE) to mitigate the risk of cache attacks. For Samsung mobile devices with O(8.0) software, update to a version that uses the Cryptography Extension (CE) to mitigate the risk of cache attacks.

Fix

Use of a Broken Cryptographic Algorithm

Weakness Enumeration

CWE-327

Related Identifiers

CVE-2018-21058

Affected Products

Samsung Mobile Devices With N(7.0)

Samsung Mobile Devices With O(8.0)

References · 4

• https://security.samsungmobile.com/securityUpdate.smsb · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-21058 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-21058 · Security Note
• https://t.me/cibsecurity/11178 · Telegram Post