Vulnerability Note VU#972224
Huawei Mobile WiFi E5151 and E5186 routers use insufficiently random values for DNS queries
Original Release date: 01 Feb 2016 | Last revised: 01 Feb 2016

Overview
Huawei Mobile WiFi E5151, firmware version 21.141.13.00.1080, and E5186, firmware version V200R001B306D01C00, use insufficiently random values for DNS queries and are vulnerable to DNS spoofing attacks.

Description
CWE-330: Use of Insufficiently Random Values – CVE-2015-8265
Huawei Mobile WiFi E5151 and E5186 routers use static source ports for all DNS queries originating from the local area network (LAN). An attacker with the ability to spoof DNS responses can cause E5151 or E5186 LAN clients to contact incorrect or malicious hosts under the attacker’s control.

The following graph shows a distribution of 114 DNS queries captured on the WAN port of the E5151:

Impact
A remote, unauthenticated attacker may be able to spoof DNS responses to cause E5151 or E5186 LAN clients to contact attacker-controlled hosts.

Solution
Apply an update

An update is available for the E5151 and can be obtained by contacting SmarTone at customer_care@smartone.com.

Huawei has released firmware version V200R001B310D01SP00C00 to address this vulnerability in the E5186. According to the vendor’s security advisory, users should contact Huawei TAC to request an upgrade.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate UpdatedHuawei TechnologiesAffected08 Oct 201510 Dec 2015If you are a vendor and your product is affected, let
us know.

CVSS Metrics (Learn More)

Group
Score
Vector

Base
5.0
AV:N/AC:L/Au:N/C:N/I:P/A:N

Temporal
3.9
E:POC/RL:OF/RC:C

Environmental
1.0
CDP:ND/TD:L/CR:ND/IR:ND/AR:ND

References

http://consumer.huawei.com/lk/mobile-broadband/mobile-wifi/tech-specs/e5151-lk.htm
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160129-01-dns-en

Credit

These vulnerabilities were reported by Joel Land of the CERT/CC.
This document was written by Joel Land.

Other Information

CVE IDs:
CVE-2015-8265

Date Public:
01 Feb 2016

Date First Published:
01 Feb 2016

Date Last Updated:
01 Feb 2016

Document Revision:
13

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