The ColdFusion XSS vulnerability is due to the lack of proper validation of user-supplied input by the application when it is posted to the application's front-end. An attacker would need to submit a malicious link on a web forum or other site, or via email, and then convince victims to click the link. Very quickly, we have a scenario where XSS has been successfully executed against a public application. The ColdFusion XSS issue may affect ColdFusion versions 2021 (and earlier). The most recent version, 2051, is not vulnerable. The ColdFusion XSS issue was first discovered by John Page (@web_profiler) of the Vulnerability Labs team at Sweet Vicious. ColdFusion XSS issues were also discovered in the ColdFusion CMS by Kirill Medvedev (@kirill_medvedev). An attacker may attempt to exploit this issue by sending a malicious URL to a victim. The malicious link may appear in an email or on a web forum. An attacker may attempt to exploit this issue by sending a malicious URL to a victim. The malicious link may appear in an email or on a web forum. An attacker may attempt to exploit this issue by sending a malicious URL to a victim. The malicious link may appear in an email or on a web forum. An attacker may attempt to exploit this issue by sending a malicious URL to a victim. The malicious link may appear in an email or on a web forum.

CVE-2021-28819

The ColdFusion XSS vulnerability is due to the lack of proper validation of user-supplied input by the application when it is posted to the application's front-end. An attacker would need to submit a malicious link on a web forum or other site, or via email, and then convince victims to click the link. Very quickly, we have a scenario where XSS has been successfully executed against a public application. The ColdFusion XSS issue may affect ColdFusion versions 2021 (and earlier). The most recent version, 2051, is not vulnerable.

Description of the ColdFusion XSS Vulnerability

The vulnerability is due to the lack of proper validation of user-supplied input by the application when it is posted on a web forum or other site. An attacker would have to submit a malicious link on a website, or via email, and then convince victims to click the link. Very quickly, we have a scenario where XSS has been successfully executed against a public application.

How to Determine If Your ColdFusion Site is Vulnerable

You may be able to determine if your ColdFusion site is vulnerable by running a scanner. The following links provide some tools that you can use:
- https://www.owasp.org/index.php/Category:OWASP_ColdFusion_XSS_Project
- http://xsservertoolkit.com/
- https://cxsecurity.com/exploitdb/
- https://www.pentesterlab.com/toolbox-exploits
- https://www.pentesterlab.com/scanner
If you determine that your site is vulnerable, you should verify that all application users are using the latest version of their application and ensure that all application developers have installed the latest version of the template engine and runtime library in their development environment, as well as updated their access control lists (ACLs) to prevent unauthorized users from accessing sensitive data in your online applications or servers.

How to exploit the ColdFusion XSS vulnerability?

Once an attacker successfully exploits the ColdFusion XSS vulnerability, they will be able to execute arbitrary code on the victim's machine. The attacker would then be presented with a page from the application that is vulnerable to arbitrary code execution. For example, if the application were a web server, the attacker could upload a payload file and cause it to be executed by the web server. However, for some sites, like social networks or forums, it may not be possible for an attacker to upload a payload via this method. In these cases, the attacker may attempt to exploit other vulnerabilities in order to gain access through another vector of attack.

Timeline

Published on: 05/12/2022 19:15:00 UTC
Last modified on: 05/23/2022 18:33:00 UTC

References