Executive Summary

CVE-2020-36931 is a stored cross-site scripting (XSS) vulnerability in Click2Magic version 1.1.5. It allows attackers to inject malicious JavaScript code into the chat name input field. When an administrator later views or processes the chat containing this malicious input, the script executes in the administrator's browser, enabling the attacker to capture administrator cookies and potentially gain unauthorized access to sensitive information or user data. [1, 3]

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Impact Analysis

This vulnerability can impact you by allowing attackers to steal administrator cookies through the injected malicious scripts. This can lead to unauthorized access to administrator accounts, compromising session security and potentially exposing sensitive user data or administrative functions within the Click2Magic application. [1, 3]

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Detection Guidance

This vulnerability can be detected by monitoring the chat name inputs for suspicious or malicious script payloads, such as injected JavaScript code. Specifically, look for chat names containing script tags or unusual HTML elements like: "<script src=https://.xss.ht></script>". Since the vulnerability involves stored cross-site scripting in the chat name input, you can search application logs or database entries for chat names containing script tags. Additionally, manual testing can be performed by attempting to input known XSS payloads into the chat name field and observing if the script executes when processed by an administrator. There are no specific commands provided, but searching logs or database entries for patterns like '<script' or 'javascript:' can help detect exploitation attempts. [1, 3]

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Mitigation Strategies

Immediate mitigation steps include sanitizing and validating all user inputs in the chat name field to prevent script injection. Implement proper input filtering to disallow HTML or JavaScript code in chat names. Additionally, apply security patches or updates from the vendor if available. As a temporary measure, restrict administrator access to the chat interface or avoid processing user requests containing untrusted chat names until a fix is applied. Educate administrators to be cautious when clicking on chat links or processing chat requests from untrusted users. [1, 3]

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