Summaryinfo

A vulnerability labeled as critical has been found in Cisco Router WAG/WRT Router. Affected is an unknown function of the component Port tcp/32764. Such manipulation leads to backdoor. Furthermore, there is an exploit available. This vulnerability has historical importance owing to its background and reception. Restrictive firewalling should be applied.

Detailsinfo

A vulnerability was found in Cisco Router WAG/WRT Router (Router Operating System) and classified as very critical. Affected by this issue is an unknown part of the component Port tcp/32764. The manipulation with an unknown input leads to a backdoor vulnerability. Using CWE to declare the problem leads to CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. Impacted is confidentiality, integrity, and availability.

The weakness was shared 12/31/2013 by Eloi Vanderbeken as backdoor_description.pdf as confirmed presentation (GitHub). The advisory is available at github.com. The vendor was not involved in the coordination of the public release. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/24/2019). This vulnerability is assigned to T1588.001 by the MITRE ATT&CK project. This vulnerability has a historic impact due to its background and reception.

A public exploit has been developed by Eloi Vanderbeken in Python and been published immediately after the advisory. The exploit is available at github.com. It is declared as highly functional. As 0-day the estimated underground price was around $25k-$100k. The advisory illustrates:

Very simple binary protocol: Header (0xC bytes) followed by a payload

Addressing this vulnerability is possible by firewalling tcp/32764.

The vulnerability is also documented in the vulnerability database at OSVDB (101653†). news.ycombinator.com is providing further details. The entry VDB-11715 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Cisco WAG120N
• Cisco WAG160N 1.00.16
• Cisco WAG200G 1.01.09
• Cisco WAG320N 1.00.12
• Cisco WAG54G2
• Cisco WAP4410N 2.0.1.0 up to 2.0.6.1
• Cisco WRT300N 2.00.17/2.00.19 (Rev. 2)
• Cisco WRVS4400N 2.0.2.1

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• Router

Version

• WAG
• WRT Router

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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