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Security Advisory - DoS Vulnerability of isub Service in Some Huawei Smartphones

  • SA No:huawei-sa-20170628-01-isub
  • Initial Release Date: Jun 28, 2017
  • Last Release Date: Jun 28, 2017

Isub service has a denial of service (DoS) vulnerability in some Huawei smart phones due to the input parameters validation. An attacker tricks a user into installing a malicious application on the smart phone, and the application can send given parameter to specific interface, which make a out-of-bounds array access that results in smart phone restart. (Vulnerability ID: HWPSIRT-2017-03139)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2017-8172.

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-20170628-01-isub-en

Product Name

Affected Version

Resolved Product and Version

P10 Plus

Earlier than VKY-AL00C00B157 versions

Upgrade to VKY-AL00C00B157

P10

Earlier than VTR-AL00C00B157 versions

Upgrade to VTR-AL00C00B157

Successful exploitation of the vulnerability allows attackers to crash the system.

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

Base Score: 5.5 (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Temporal Score: 5.1 (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 application on the smart phone.

Vulnerability details:

Isub service has a denial of service (DoS) vulnerability in some Huawei smart phones due to the input parameters validation. An attacker tricks a user into installing a malicious application on the smart phone, and the application can send given parameter to specific interface, which make a out-of-bounds array access that results in smart phone restart.

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 Zhou Ye, Xu Lei Yong, Li Bo of 360 Vulpecker Team. Huawei would like to thank them for working with us and coordinated vulnerability disclosure to protect our customers.

2017-06-28 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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