Netgear DGN2200B Firmware 1.0.0.36_7.0.36 fw_serv_add.cgi userdefined cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in Netgear DGN2200B Firmware 1.0.0.36_7.0.36. This affects an unknown function of the file fw_serv_add.cgi. The manipulation of the argument userdefined results in cross site scripting. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as critical, was found in Netgear DGN2200B Firmware 1.0.0.36_7.0.36 (Wireless LAN Software). Affected is an unknown part of the file fw_serv_add.cgi. The manipulation of the argument userdefined with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 12/17/2012. The weakness was disclosed 02/16/2013 by Michael Messner (m1k3) with s3cur1ty as m1adv2013-015 as not defined bulletin (Website). The advisory is shared for download at s3cur1ty.de. The public release happened without coordination with the vendor. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

A public exploit has been developed by m-1-k-3 and been published immediately after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 61 days. During that time the estimated underground price was around $5k-$25k.

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

The vulnerability is also documented in the databases at Exploit-DB (24513) and OSVDB (90322†). The entries VDB-7749, VDB-7750 and VDB-7751 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Wireless LAN Software

Vendor

• Netgear

Name

• DGN2200B

Version

• Firmware 1.0.0.36_7.0.36

License

• commercial

Website

• Vendor: https://www.netgear.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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

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