UEditor Cross Site Scripting Scanner

UEditor is a popular web-based rich text editor widely used for content management in various web applications and platforms. Developed by the Chinese company Baidu, UEditor is specifically designed for web content editing and is integrated into numerous websites across different industries. It provides a user-friendly interface that allows users to easily create and edit text, images, and videos within web pages. The software is used by web developers and content creators to enhance the functionality and visual appeal of their websites. Being a critical component of various web systems, any security vulnerabilities in UEditor can have significant impacts.

Cross-Site Scripting (XSS) is a common web security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. In this case, the vulnerability exists in the UEditor due to improper handling of XML file uploads. As a result, attackers can potentially exploit this flaw to execute arbitrary code within a user's web browser, leading to unauthorized actions or data theft. XSS vulnerabilities are particularly dangerous as they can affect multiple users and compromise sensitive information.

The technical details of this vulnerability involve the ability to upload an XML file containing embedded JavaScript code to the UEditor. When the uploaded file is rendered, the JavaScript executes, leading to the XSS attack. The attack targets the endpoint handling file uploads, and the vulnerability is rooted in the absence of adequate validation and sanitization of user input. By exploiting this flaw, an attacker can craft an XML file that, when processed by the UEditor, performs unwanted actions within a victim's browser.

If exploited by malicious actors, the XSS vulnerability in UEditor can lead to severe consequences. Potential effects include unauthorized actions performed on behalf of legitimate users, such as account hijacking, data theft, and unauthorized access to confidential information. The execution of arbitrary scripts may also enable attackers to alter the content displayed on the website, deface web pages, or redirect users to malicious sites. Moreover, it can compromise user privacy and security, resulting in reputational damage and financial loss for the affected organization.

REFERENCES

• https://blog.csdn.net/weixin_50464560/article/details/124803185
• https://github.com/fex-team/ueditor/releases/tag/v1.4.3.3