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Security Advisory - Improper Authorization Vulnerability in Several Smartphones

  • SA No:huawei-sa-20191127-01-smartphone
  • Initial Release Date: Nov 27, 2019
  • Last Release Date: Nov 27, 2019

There is an improper authorization vulnerability in several smartphones. The software does not properly restrict certain operation in ADB mode, successful exploit could allow the attacker to switch to third desktop after a series of operation. (Vulnerability ID: HWPSIRT-2019-02253)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-5308.

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-20191127-01-smartphone-en

Product Name

Affected Version

Resolved Product and Version

Mate 20 RS

Versions earlier than 9.1.0.135(C786E133R3P1)

Upgrade to 9.1.0.135(C786E133R3P1)


Successful exploit could allow the attacker to switch to third desktop after a series of operation.


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

Base Score: 2.4 (AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Temporal Score: 2.3 (E:F/RL:O/RC:C)


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

The attacker has got the smartphone.

Vulnerability details:

The software does not properly restrict certain operation in ADB mode, successful exploit could allow the attacker to switch to third desktop after a series of operation.


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

This vulnerability was discovered by Huawei internal tester.


2019-11-27 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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