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Security Advisory - Buffer Overflow Vulnerability in the Boot Loaders of Huawei Mobile Phones

  • SA No:huawei-sa-20170302-01-smartphone
  • Initial Release Date: Mar 02, 2017
  • Last Release Date: Dec 01, 2017

The boot loaders of some Huawei mobile phones have a buffer overflow vulnerability due to the lack of parameter validation. An attacker with the root privilege of an Android system may trick a user into installing a malicious APP. The APP can modify specific data to cause buffer overflow in the next system reboot, causing continuous system reboot or arbitrary code execution. (Vulnerability ID: HWPSIRT-2016-12093)
This vulnerability has been assigned a CVE ID: CVE-2017-2729.
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-20170302-01-smartphone-en

Product Name

Affected Version

Resolved Product and Version

Honor 5A

Versions earlier than CAM-TL00C01B193

CAM-TL00C01B193

Versions earlier than CAM-TL00HC00B193

CAM-TL00HC00B193

Versions earlier than CAM-UL00C00B193

CAM-UL00C00B193

P8 Lite

Versions earlier than ALE-L02C635B568

ALE-L02C635B568

Versions earlier than ALE-L21C10B541

ALE-L21C10B541

Versions earlier than ALE-L21C185B568

ALE-L21C185B568

Versions earlier than ALE-L21C432B596

ALE-L21C432B596

Versions earlier than ALE-L21C464B595

ALE-L21C464B595

Versions earlier than ALE-L21C636B568

ALE-L21C636B568

Versions earlier than ALE-L23C605B535

ALE-L23C605B535


Successful exploit could cause continuous system reboot or arbitrary code execution.

The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 6.5 (AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H)
Temporal Score: 6.0 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
The attacker has gained the root privilege of an Android system and successfully tricked a user into installing the malicious APP.
Vulnerability details:
An attacker with the root privilege of an Android system may trick a user into installing a malicious APP. The APP can modify specific data to cause buffer overflow in the next system reboot, causing continuous system reboot or arbitrary code execution.

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 Aravind, Machiry. Huawei would like to thank Aravind, Machiry for working with us and coordinated vulnerability disclosure to protect our customers.

2017-12-01 V1.1 UPDATED Updated the "Software Versions and Fixes" section;
2017-03-02 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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