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Security Advisory - Numeric Errors Vulnerability in Some Huawei Routers

  • SA No:huawei-sa-20171215-01-router
  • Initial Release Date: Dec 15, 2017
  • Last Release Date: Dec 15, 2017

Some Huawei routers have a numeric errors vulnerability. An unauthenticated, remote attacker may send specific TCP messages with keychain authentication option to the affected products. Due to the improper validation of the messages, it will cause numeric errors when handling the messages. Successful exploit will cause the affected products to reset. (Vulnerability ID: HWPSIRT-2016-08021)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2017-17300.

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-20171215-01-router-en

Product Name

Affected Version

Resolved Product and Version

S12700

V200R008C00

Upgrade to V200R008SPH006

V200R009C00

V200R009C00SPC500

S5700

V200R007C00

Upgrade to V200R007SPH010

V200R008C00

Upgrade to V200R008SPH006

V200R009C00

V200R009C00SPC500

S6700

V200R008C00

Upgrade to V200R008SPH006

V200R009C00

V200R009C00SPC500

S7700

V200R008C00

Upgrade to V200R008SPH006

V200R009C00

V200R009C00SPC500

S9700

V200R008C00

Upgrade to V200R008SPH006

V200R009C00

V200R009C00SPC500

Successful exploit will cause the affected products to reset.

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

Base Score: 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Temporal Score: 7.0 (E:F/RL:O/RC:C)

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

1. The attacker gains access to the affected products network.

2. The TCP keychain authentication is configured in the affected products.

Vulnerability details:

An unauthenticated, remote attacker may send specific TCP messages with keychain authentication option to the affected products. Due to the improper validation of the messages, it will cause numeric errors when handling the messages. Successful exploit will cause the affected products to reset.

Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities.

This vulnerability was discovered by Huawei internal tester.

2017-12-15 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.

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.