A vulnerability was found in PRTG Network Monitor up to 22.2.77.2204 (Network Management Software). It has been classified as problematic. Affected is an unknown code block of the component Cascading Style Sheet Handler. 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:

PRTG Network Monitor through 22.2.77.2204 does not prevent custom input for a device’s icon, which can be modified to insert arbitrary content into the style tag for that device. When the device page loads, the arbitrary Cascading Style Sheets (CSS) data is inserted into the style tag, loading malicious content. Due to PRTG Network Monitor preventing “characters, and from modern browsers disabling JavaScript support in style tags, this vulnerability could not be escalated into a Cross-Site Scripting vulnerability.

The weakness was published 10/26/2022. This vulnerability is traded as CVE-2022-35739 since 07/13/2022. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

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

Productinfo

Type

• Network Management Software

Vendor

• PRTG

Name

• Network Monitor

Version

• 22.2.77.2204

CPE 2.3info

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• 🔍

CPE 2.2info

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