Summaryinfo

A vulnerability was found in NAT32 2.2 Build 22284 and classified as problematic. This impacts an unknown function of the file /shell?cmd. The manipulation results in cross site scripting. This vulnerability was named CVE-2018-6940. The attack may be performed from remote. In addition, an exploit is available. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability, which was classified as problematic, was found in NAT32 2.2 Build 22284. Affected is an unknown code of the file /shell?cmd. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

A /shell?cmd= XSS issue exists in the HTTPD component of NAT32 v2.2 Build 22284 devices that can be exploited for Remote Code Execution in conjunction with CSRF.

The bug was discovered 02/14/2018. The weakness was presented 02/20/2018 as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2018-6940 since 02/12/2018. 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.

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 6 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 vulnerability is also documented in the vulnerability database at Exploit-DB (44033). See VDB-113629 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• NAT32

Version

• 2.2 Build 22284

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• 🔍

CPE 2.2info

• 🔍

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