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Security Advisory - Multiple Security Vulnerabilities in Huawei Smart Phone Products

  • SA No:huawei-sa-20161123-01-smartphone
  • Initial Release Date: Nov 23, 2016
  • Last Release Date: Nov 25, 2016

The TrustZone driver of some Huawei smart phone products has an input validation vulnerability. An attacker may trick the target user into installing a malicious APP which could exploit this vulnerability to pass specific parameters to the TrustZone driver. Successful exploit could cause the system to restart. (Vulnerability ID: HWPSIRT-2016-10040)
This vulnerability has been assigned CVE ID: CVE-2016-8762.
The TrustZone driver of some Huawei smart phone products has an improper resource release vulnerability. An attacker may trick the target user into installing a malicious APP which could exploit this vulnerability to pass specific parameters to the TrustZone driver. Successful exploit could lead to system restart or privilege elevation. (Vulnerability ID: HWPSIRT-2016-10041)
This vulnerability has been assigned CVE ID: CVE-2016-8763.
The Secure Storage Trusted APP of some Huawei smart phone products has an input validation vulnerability. An attacker with the root privilege of the Android system could exploit this vulnerability to read and write user mode memory data anywhere in the TrustZone driver. (Vulnerability ID: HWPSIRT-2016-10043)
This vulnerability has been assigned CVE ID: CVE-2016-8764.
Huawei has released software updates to fix these vulnerabilities. This advisory is available at the following link: 
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20161123-01-smartphone-en

Product Name

Affected Version

Resolved Product and Version

P9

Versions earlier than EVA-AL10C00B352

EVA-AL00C00B352

P9 Lite

VNS-L21C185B130 and earlier versions

VNS-L21C185B150

P8 Lite
ALE-L02C636B150 and earlier versions
ALE-L02C636B170

[1] Mobile phones will receive a system update prompt. The vulnerabilities will be fixed after users install the update.

HWPSIRT-2016-10040:
Successful exploit could cause the system to restart.
HWPSIRT-2016-10041:
Successful exploit could lead to system restart or privilege elevation. 
HWPSIRT-2016-10043:
Successful exploit could allow an attacker with the root privilege of the Android system to read and write user mode memory data anywhere in the TrustZone driver.
The vulnerability classification has been performed by using the CVSSv3 scoring system (https://www.first.org/cvss/specification-document).
HWPSIRT-2016-10040:
Base Score: 6.1 (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H) 
Temporal Score: 5.7 (E:F/RL:O/RC:C)
HWPSIRT-2016-10041:
Base Score: 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) 
Temporal Score: 7.2 (E:F/RL:O/RC:C)
HWPSIRT-2016-10043:
Base Score: 6.9 (AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L) 
Temporal Score: 6.4 (E:F/RL:O/RC:C)
HWPSIRT-2016-10040:
1. Prerequisite:
The attacker successfully tricks the target user into installing a malicious mobile APP;
2. Attacking procedure:
The attacker uses the malicious APP to pass specific parameters to the TrustZone driver. Successful exploit could cause the system to restart.
HWPSIRT-2016-10041:
1. Prerequisite:
The attacker successfully tricks the target user into installing a malicious mobile APP;
2. Attacking procedure:
The attacker uses the malicious APP to pass specific parameters to the TrustZone driver. Successful exploit could lead to system restart or privilege elevation.
HWPSIRT-2016-10043:
1. Prerequisite:
The attacker has the root privilege of the Android system;
2. Attacking procedure:
The attacker with the root privilege of the Android system could exploit this vulnerability to read and write user mode memory data anywhere in the TrustZone driver.

Smart phones that support automatic update will receive a system update prompt. You can install the update to fix the vulnerability.

This vulnerability was disclosed by Nick Stephens via GeekPwn.
2016-11-25 V1.2 UPDATED Updated the information of “Source”
2016-11-24 V1.1 UPDATED Updated the affected version
2016-11-23 V1.0 INITIAL

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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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