cve/2018/CVE-2018-21058.md

### [CVE-2018-21058](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-21058)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### 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).

### POC

#### Reference
- https://security.samsungmobile.com/securityUpdate.smsb
- https://security.samsungmobile.com/securityUpdate.smsb

#### Github
No PoCs found on GitHub currently.