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Security Advisory - Buffer Overflow Vulnerability in Emergdata Driver of Huawei Smart Phones

  • SA No:huawei-sa-20170208-01-smartphone
  • Initial Release Date: 2017-02-08
  • Last Release Date: 2017-02-08

The emerg_data driver of some Huawei smart phones has a buffer overflow vulnerability due to the lack of a parameters check. An attacker with the root privilege of the Android system can tricks a user into installing a malicious application on the smart phone, and send given parameter to smart phone to crash the system or escalate privilege. (Vulnerability ID: HWPSIRT-2016-12023) 

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2017-2696. 

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-20170208-01-smartphone-en

Product Name

Affected Version

Resolved Product and Version

Y6Ⅱ

CAM-L21C10B130 and earlier versions

CAM-L21C10B141

CAM-L21C185B141 and earlier versions

CAM-L21C185B150

Successful exploitation of the vulnerabilities allows attackers to crash the system or escalate user privilege.

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 the root privilege of the Android system and tricks a user into installing a malicious application on the smart phone.

Vulnerability details:

The attacker with the root privilege of the Android system could tricks a user into installing a malicious application on the smart phone, and send given parameter to smart phone to crash the system or escalate privilege.

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 ADLab of Venustech. Huawei would like to thank ADLab of Venustech for working with us and coordinated vulnerability disclosure to protect our customers.

2017-02-08 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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