Squaredup Cross-site Scripting

A cross-site scripting (XSS) vulnerability in Image Tile in SquaredUp for SCOM 5.2.1.6654 allows remote attackers to inject arbitrary web script or HTML via an SVG file. (2021-12-07, CVE-2021-40092)

A cross-site scripting (XSS) vulnerability in integration configuration in SquaredUp for SCOM 5.2.1.6654 allows remote attackers to inject arbitrary web script or HTML via dashboard actions. (2021-12-07, CVE-2021-40093)

A cross-site scripting (XSS) vulnerability in integration configuration in SquaredUp for SCOM 5.2.1.6654 allows remote attackers to inject arbitrary web script or HTML via modification of the authorisationUrl in some integration configurations. (2021-12-07, CVE-2021-40096)

A DOM-based XSS vulnerability affects SquaredUp for SCOM 5.2.1.6654. If successfully exploited, this vulnerability may allow attackers to inject malicious code into a user's device. (2021-12-07, CVE-2021-40094)

SquaredUp allowed Stored XSS before version 4.6.0. A user was able to create a dashboard that executed malicious content in iframe or by uploading an SVG that contained a script. (2021-02-03, CVE-2020-9390)

Cross site scripting is an attack where a web page executes code that is injected by an adversary. It usually appears, when users input is presented. This attack can be used to impersonate a user, take over control of the session, or even steal API keys.

The attack can be executed e.g. when you application injects the request parameter directly into the HTML code of the page returned to the user:

https://server.com/confirmation?message=Transaction+Complete

what results in:

<span>Confirmation: Transaction Complete</span>

In that case the message can be modified to become a valid Javascript code, e.g.:

https://server.com/confirmation?message=<script>dangerous javascript code here</script>

and it will be executed locally by the user's browser with full access to the user's personal application/browser data:

<span>Confirmation: <script>dangerous javascript code here</script></span>