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Security Advisory - Information Disclosure Vulnerability in Several Smartphones

  • SA No:huawei-sa-20200527-01-smartphone
  • Initial Release Date: 2020-05-27
  • Last Release Date: 2020-08-26

There is an information disclosure vulnerability in several smartphones. The attacker could wake up voice assistant then do a series of crafted voice operation, successful exploit could allow the attacker read certain files without unlock the phone leading to information disclosure. (Vulnerability ID: HWPSIRT-2019-10102)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-1809.

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-20200527-01-smartphone-en


Product Name

Affected Version

Resolved Product and Version

ALP-AL00B

Versions earlier than 10.0.0.143(C00E143R2P4)

10.0.0.143(C00E143R2P4)

ALP-TL00B

Versions earlier than 10.0.0.143(C01E143R1P4)

10.0.0.143(C01E143R1P4)

BLA-AL00B

Versions earlier than 10.0.0.143(C786E144R2P4)

10.0.0.143(C786E144R2P4)

BLA-TL00B

Versions earlier than 10.0.0.143(C01E143R1P4)

10.0.0.143(C01E143R1P4)

HUAWEI Mate 20

Versions earlier than 10.1.0.135(C01E135R2P8)

10.1.0.135(C01E135R2P8)

Versions earlier than 10.1.0.160(C00E160R3P8)

10.1.0.160(C00E160R3P8)

HUAWEI Mate 20 Pro

Versions earlier than 10.1.0.270(C432E7R1P5)

10.1.0.270(C432E7R1P5)

Versions earlier than 10.1.0.270(C635E3R1P5)

10.1.0.270(C635E3R1P5)

Versions earlier than 10.1.0.273(C185E7R2P4)

10.1.0.273(C185E7R2P4)

Versions earlier than 10.1.0.273(C636E7R2P4)

10.1.0.273(C636E7R2P4)

Versions earlier than 10.1.0.277(C10E7R2P4)

10.1.0.277(C10E7R2P4)

Versions earlier than 10.1.0.277(C461E7R1P5)

10.1.0.277(C461E7R1P5)

Versions earlier than 10.1.0.277(C605E7R1P5)

10.1.0.277(C605E7R1P5)

HUAWEI Mate 20 X

Versions earlier than 10.1.0.135(C00E135R2P8)

10.1.0.135(C00E135R2P8)

Laya-AL00EP

Versions earlier than 10.1.0.135(C786E135R3P8)

10.1.0.135(C786E135R3P8)

Tony-AL00B

Versions earlier than 10.1.0.160(C00E160R2P11)

10.1.0.160(C00E160R2P11)

Tony-TL00B

Versions earlier than 10.1.0.160(C01E160R2P11)

10.1.0.160(C01E160R2P11)





Successful exploit could allow the attacker read certain files without unlock the phone leading to information disclosure.


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:L/I:N/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 should gain the phone and wake up the voice assistant.

Vulnerability details:

The attacker could wake up voice assistant then do a series of crafted voice operation, successful exploit could allow the attacker read certain files without unlock the phone leading to information disclosure.


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 Ding Yicong. Huawei would like to thank Ding Yicong for working with us and coordinated vulnerability disclosure to protect our customers.


2020-08-26 V1.3 UPDATED Updated the "Software Versions and Fixes" section;

2020-07-15 V1.2 UPDATED Updated the "Software Versions and Fixes" section;

2020-06-24 V1.1 UPDATED Updated the "Software Versions and Fixes" section;

2020-05-27 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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