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Security Advisory - Privilege Elevation Vulnerability Caused by Arbitrary File Upload in Huawei Themes

  • SA No:huawei-sa-20170222-01-theme
  • Initial Release Date: 2017-02-22
  • Last Release Date: 2017-11-07

The Huawei Themes APP in some Huawei products has a privilege elevation vulnerability due to the lack of theme pack check. An attacker could exploit this vulnerability to upload theme packs containing malicious files and trick users into installing the theme packets, resulting in the execution of arbitrary code. (Vulnerability ID: HWPSIRT-2016-11073)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2017-2699.

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-20170222-01-theme-en

Product Name

Affected Version

Resolved Product and Version

Honor 7

Earlier than PLK-UL00C17B385 versions

Upgrade to PLK-UL00C17B385

Mate S

Earlier than CRR-L09C432B380 versions

CRR-L09C432B380

 LYO-L21
Earlier than LYO-L21C577B128 versions  LYO-L21C577B128 

An attacker could exploit this vulnerability to upload theme packs containing malicious files and trick users into installing the theme packets, resulting in the execution of arbitrary code.

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

Base Score: 6.6 (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H)

Temporal Score: 6.1 (E:F/RL:O/RC:C)

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

The attacker tricks a user into installing a malicious theme on the smart phone.

Vulnerability details:

Due to the lack of theme pack check. An attacker could exploit this vulnerability to upload theme packs containing malicious files and trick users into installing the theme packets, resulting in the execution of arbitrary code.

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 Nicky(Wu Huiyu) of Tencent Security Platform Department. Huawei would like to thank him for working with us and coordinated vulnerability disclosure to protect our customers.

2017-11-07 V1.2 UPDATE Update the affected product list and fixed version

2017-02-23 V1.1 UPDATE Update the vulnerability source
2017-02-22 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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