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Security Advisory - A CGI application vulnerability in Some Huawei Products

  • SA No:huawei-sa-20171129-01-httpproxy
  • Initial Release Date: 2017-11-29
  • Last Release Date: 2017-11-29

Some open source software used by Huawei does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request. (Vulnerability ID: HWPSIRT-2016-07052)
This vulnerability has been assigned a CVE ID: CVE-2016-5386.
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-20171129-01-httpproxy-en

Product Name

Affected Version

Resolved Product and Version

AR3200

V200R005C30

Upgrade to V200R008C50

V200R005C32

V200R006C10

V200R006C11

V200R006C12

V200R006C13

V200R006C15

V200R006C16

V200R006C17

V200R007C00

Remote attackers can redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request by exploit this vulnerability.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 9.0 (AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
Temporal Score: 8.3 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
Attackers can access the vulnerable device by network.
Vulnerability details:
Some open source software used by Huawei does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request.

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 reported to Huawei by CERT Coordination Center firstly.
2017-11-29 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.

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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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