Exploitation of this vulnerability requires entry of valid data into the form, which can be accomplished by visiting a specially crafted website or by submitting specially crafted data via a web form. This vulnerability can be exploited by hackers to obtain sensitive information or to execute arbitrary code on a victim’s computer. A proof-of-concept (PoC) is available on the researcher’s blog. Stored XSS issues are quite common on websites. With the increased use of social media websites, XSS attacks have become even more common. Stored XSS issues can be particularly dangerous. They can be exploited by hackers to steal sensitive information or to conduct other forms of malicious activity.
Vulnerable Code
In the vulnerable code, a user is directed to a URL that includes the following HTML code:
How Does Stored XSS Work?
Stored XSS attacks take advantage of the fact that a website stores data on the client’s computer. If a hacker is able to enter valid input into a form field, the server will save this information and display it back to the user. Depending on how the website is structured, it may be possible for attackers to access sensitive information stored on other users’ computers. For example, if you have an itemized list of your most recent purchases, then any hacker who successfully exploited your form would also be able to view this list.
What is Stored XSS?
When a website stores user input and then displays it back to the user without proper validation, it is called stored XSS. Stored XSS vulnerabilities can be exploited by hackers to steal sensitive information or to conduct other forms of malicious activity like launching denial-of-service (DoS) attacks.
Stored XSS flaws are quite common on websites. With the increased use of social media websites, these types of attacks have become even more common. Stored XSS flaws are particularly dangerous because they can be exploited by hackers to steal sensitive information or to conduct other forms of malicious activity like launching DoS attacks.
Description of the vulnerability
A stored XSS vulnerability exists in the GitHub website that can be exploited by hackers to steal sensitive data. This vulnerability can be exploited by visiting a specially crafted website or submitting specially crafted data via a form on the GitHub website. The PoC for this vulnerability is available on the researcher’s blog.
Timeline
Published on: 10/11/2022 18:15:00 UTC
Last modified on: 10/11/2022 20:31:00 UTC