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Security Advisory - Use After Free Vulnerability in Bastet Driver of Some Huawei Smart Phones

  • SA No:huawei-sa-20170927-01-smartphone
  • Initial Release Date: Sep 27, 2017
  • Last Release Date: Sep 27, 2017

The Bastet Driver of some Huawei smart phones has a use after free (UAF) vulnerability. An attacker can convince a user to install a malicious application which has a high privilege to exploit this vulnerability, Successful exploitation may cause arbitrary code execution. (Vulnerability ID: HWPSIRT-2017-07179)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2017-8203.

Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

Product Name

Affected Version

Resolved Product and Version

Nova 2

Versions earlier than PIC-AL00C00B173

PIC-AL00 C00B173

Nova 2 Plus

Versions earlier than BAC-AL00C00B173

BAC-AL00 C00B173

An attacker may exploit this vulnerability to cause arbitrary code execution.

The vulnerability classification has been performed by using the CVSSv3 scoring system (

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 successfully tricked a user into installing the malicious application which has a high privilege.

Vulnerability details:

An attacker can convince a user to install a malicious application to exploit this vulnerability. Successful exploitation may cause 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 Yonggang Guo of IceSword Lab, Qihoo 360 Technology Co. Ltd. Huawei would like to thank Yonggang Guo for working with us and coordinated vulnerability disclosure to protect our customers.

2017-09-27 V1.0 INITIAL

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