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Security Advisory - Out-of-bounds Read Vulnerability in Some Huawei Smartphones

  • SA No:huawei-sa-20190220-01-phone
  • Initial Release Date: 2019-02-20
  • Last Release Date: 2019-02-20

Some Huawei smartphones have an out-of-bounds read vulnerability. An attacker with a high permission runs some specific commands on the smartphone. Due to insufficient input verification, successful exploit may cause out-of-bounds read of the memory and the system abnormal. (Vulnerability ID: HWPSIRT-2018-11018)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-5296.

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-20190220-01-phone-en


Product Name

Affected Version

Resolved Product and Version

Mate20

Versions earlier than HMA-AL00C00B175

HMA-AL00C00B175


Successful exploit may cause the system abnormal.


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

Base Score: 3.9 (AV:P/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)

Temporal Score: 3.6 (E:F/RL:O/RC:C)

Overall Score: 3.6


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

The attacker obtains the affected mobile phone and obtains high permission.

Vulnerability details:

Some Huawei smartphones have an out-of-bounds read vulnerability. An attacker with a high permission runs some specific commands on the smartphone. Due to insufficient input verification, successful exploit may cause out-of-bounds read of the memory and the system abnormal.


1. 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.


2019-02-20 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.

This document is provided on an "AS IS" basis and does not imply any kind of guarantee or warranty, either express or implied, including the warranties of merchantability or fitness for a particular purpose. In no event shall Huawei or any of its directly or indirectly controlled subsidiaries or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. Your use of the document, by whatsoever means, will be totally at your own risk. Huawei is entitled to amend or update this document from time to time.