Sysaid Cross-site Scripting

Sysaid – Sysaid 14.2.0 Reflected Cross-Site Scripting (XSS) - The parameter "helpPageName" used by the page "/help/treecontent.jsp" suffers from a Reflected Cross-Site Scripting vulnerability. For an attacker to exploit this Cross-Site Scripting vulnerability, it's necessary for the affected product to expose the Offline Help Pages. An attacker may gain access to sensitive information or execute client-side code in the browser session of the victim user. Furthermore, an attacker would require the victim to open a malicious link. An attacker may exploit this vulnerability in order to perform phishing attacks. The attacker can receive sensitive data like server details, usernames, workstations, etc. He can also perform actions such as uploading files, deleting calls from the system (2022-05-12, CVE-2022-23165)

SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication. (2021-10-29, CVE-2021-31862)

SysAid 20.3.64 b14 is affected by Cross Site Scripting (XSS) via a /KeepAlive.jsp?stamp= URI. (2021-07-22, CVE-2021-30049)

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>