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Security Advisory - Improper Authentication Vulnerability in Smartphones

  • SA No:huawei-sa-20191204-01-smartphone
  • Initial Release Date: Dec 04, 2019
  • Last Release Date: Dec 04, 2019

There is an improper authentication vulnerability in smartphones. The applock does not perform a sufficient authentication in a rare condition, successful exploit could allow the attacker to use the application locked by applock in an instant. (Vulnerability ID: HWPSIRT-2019-04103)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-5252.

Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

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

Product Name

Affected Version

Resolved Product and Version

畅享8 Plus

Versions earlier than 9.1.0.124(C00E112R1P6T8)

9.1.0.124(C00E112R1P6T8)

Y9

Versions earlier than  9.1.0.131(C432E6R1P5T8)

9.1.0.131(C432E6R1P5T8)

Versions earlier than 9.1.0.139(C636E6R1P5T8)

9.1.0.139(C636E6R1P5T8)

Honor 8X

Versions earlier than  9.1.0.217(C00E15R3P2T8)

9.1.0.217(C00E15R3P2T8)

Versions earlier than  9.1.0.237(C432E1R3P2T8)

9.1.0.237(C432E1R3P2T8)

Versions earlier than  9.1.0.237(C636E2R4P1T8)

9.1.0.237(C636E2R4P1T8)

Honor 9 Lite

Versions earlier than  9.1.0.124(C00E112R2P10T8)

9.1.0.124(C00E112R2P10T8)

Versions earlier than  9.1.0.136(C636E5R1P5T8)

9.1.0.136(C636E5R1P5T8)

Honor 9i

Versions earlier than  9.1.0.115(C00E113R1P6T8)

9.1.0.115(C00E113R1P6T8)

Versions earlier than  9.1.0.122(C636E4R1P4T8)

9.1.0.122(C636E4R1P4T8)

Y6 Pro

Versions earlier than  9.1.0.248(C636E5R3P1)

9.1.0.248(C636E5R3P1)


Successful exploit could allow the attacker to use the application locked by applock in an instant.


The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).

Base Score: 3.1 (AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

Temporal Score: 2.9 (E:F/RL:O/RC:C)


This vulnerability can be exploited only when the following conditions are present:

The attacker got the phone and the phone's CPU is almost exhausted.

Vulnerability details:

The applock does not perform a sufficient authentication in a rare condition, successful exploit could allow the attacker to use the application locked by applock in an instant.


The product that supports automatic update will receive a system update prompt. You can install the update to fix the vulnerability.

This vulnerability was reported to Huawei PSIRT by security researcher Fan Yuxi. Huawei would like to thank Fan Yuxi for working with us and coordinated vulnerability disclosure to protect our customers.


2019-12-04 V1.0 INITIAL


Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

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