Nunjucks 2.4.2 on Node.js Templating Engine name[] cross site scripting

Summaryinfo

A vulnerability was found in Nunjucks 2.4.2 on Node.js. It has been classified as problematic. Impacted is an unknown function of the component Templating Engine. Performing a manipulation of the argument name[] with the input <script>alert(1)</script> results in cross site scripting. This vulnerability is identified as CVE-2016-10547. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Nunjucks 2.4.2 on Node.js (JavaScript Library). This affects an unknown code block of the component Templating Engine. The manipulation of the argument name[] with the input value <script>alert(1)</script> 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. The summary by CVE is:

Nunjucks is a full featured templating engine for JavaScript. Versions 2.4.2 and lower have a cross site scripting (XSS) vulnerability in autoescape mode. In autoescape mode, all template vars should automatically be escaped. By using an array for the keys, such as `name[]=<script>alert(1)</script>`, it is possible to bypass autoescaping and inject content into the DOM.

The bug was discovered 10/17/2016. The weakness was released 05/31/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2016-10547 since 10/29/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 591 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.

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Productinfo

Type

• JavaScript Library

Name

• Nunjucks

Version

• 2.4.2

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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