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Security Advisory - Authentication Bypass Vulnerability in Some Pre-installed Apps on Huawei Phones

  • SA No:huawei-sa-20180413-01-app
  • Initial Release Date:2018-04-13
  • Last Release Date:2018-04-13

There is an authentication bypass vulnerability in some pre-installed apps on Huawei mobile phones due to insufficient validation on invocation requests. An attacker may trick a user into installing a malicious app which can invoke the open interfaces of the vulnerable apps to install any apps. Successful exploit could allow the malicious app to implement silent installation of any apps. (Vulnerability ID: HWPSIRT-2018-01014)
This vulnerability has been assigned a CVE ID: CVE-2018-7931.
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-20180413-01-app-en

Product Name

Affected Version

Resolved Product and Version

AppGallery

The versions before 8.0.4.300

8.0.4.300

GameCenter

The versions before 8.0.4.300

8.0.4.300

Successful exploit could allow the malicious app to implement silent installation of any apps.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
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)
This vulnerability can be exploited only when the following conditions are present:
The attacker successfully tricks a user into installing a malicious application on the smart phone.
Vulnerability details:
There is an authentication bypass vulnerability in some pre-installed apps on Huawei mobile phones due to insufficient validation on invocation requests. An attacker may trick a user into installing a malicious app which can invoke the open interfaces of the vulnerable apps to install any apps. Successful exploit could allow the malicious app to implement silent installation of any apps.
None


Users will receive a APP update prompt. The vulnerabilities will be fixed after users install the update.

This vulnerability was discovered by Huawei internal tester.
2018-04-13 V1.0 INITIAL

None

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.