Moxa AWK-3131A 1.1 HTTP Header bkpath HTTP Poisoning injection

Summaryinfo

A vulnerability described as critical has been identified in Moxa AWK-3131A 1.1. The impacted element is an unknown function of the component HTTP Header Handler. Executing a manipulation of the argument bkpath can lead to injection (HTTP Poisoning). This vulnerability is tracked as CVE-2016-8720. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Moxa AWK-3131A 1.1 (Router Operating System) and classified as critical. This vulnerability affects an unknown code block of the component HTTP Header Handler. The manipulation of the argument bkpath with an unknown input leads to a injection vulnerability (HTTP Poisoning). The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An exploitable HTTP Header Injection vulnerability exists in the Web Application functionality of the Moxa AWK-3131A Wireless Access Point running firmware 1.1. A specially crafted HTTP request can inject a payload in the bkpath parameter which will be copied in to Location header of the HTTP response.

The bug was discovered 04/10/2017. The weakness was disclosed 04/13/2017 (Website). The advisory is shared for download at talosintelligence.com. This vulnerability was named CVE-2016-8720 since 10/17/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1055.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-99836, VDB-99835, VDB-99834 and VDB-99833 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Router Operating System

Vendor

• Moxa

Name

• AWK-3131A

Version

• 1.1

License

• commercial

Website

• Vendor: https://www.moxa.com/

CPE 2.3info

• 🔍

CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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