Improper Authentication in several Huawei Smartphones

1) Improper Authentication

EUVDB-ID: #VU23396

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5252

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows an attacker to bypass authentication process.

The vulnerability exists due to the applock does not perform a sufficient authentication in a rare condition. An attacker with physical access to the device can use the application locked by applock in an instant when the phone's CPU is almost exhausted.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Huawei Enjoy 8 Plus: before 9.1.0.124

Huawei Y9: before 9.1.0.139

Huawei Honor 8X: before 9.1.0.237

Huawei Honor 9 Lite: before 9.1.0.136

Huawei Honor 9i: before 9.1.0.122

Huawei Y6 Pro: before 9.1.0.248

External links

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191204-01-smartphone-en

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.