A vulnerability classified as problematic was found in Exponent CMS up to 2.3.4 (Content Management System). This vulnerability affects an unknown code block of the component Reset Your Password. The manipulation of the argument Username/Email with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The software 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. As an impact it is known to affect integrity. CVE summarizes:

Cross-site scripting (XSS) vulnerability in Reset Your Password module in Exponent CMS before 2.3.5 allows remote attackers to inject arbitrary web script or HTML via the Username/Email.

The bug was discovered 04/21/2016. The weakness was shared 01/18/2017 (Website). The advisory is shared for download at exponentcms.lighthouseapp.com. This vulnerability was named CVE-2015-8667 since 12/24/2015. 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 T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 272 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.3.5 eliminates this vulnerability.

The entry 95465 is related to this item.

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• Content Management System

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• Exponent

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• CMS

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• open-source

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