CVE-2022-24497 Windows Network File System Remote Code Execution Vulnerability

CVE-2022-24497 Windows Network File System Remote Code Execution Vulnerability

This vulnerability is being actively exploited in the wild. The attacker injects malicious script code in a website to conduct XSS (cross-site scripting) attack and gain access to the system of the end user.

There are two ways of exploiting this vulnerability. This can be done by uploading a malicious file in the system or downloading a malicious file from the Internet.

The vulnerability exists in the way the server handles the remote file request. An attacker can exploit this vulnerability by uploading a malicious file such as a script file, image, or PowerShell script and request this file from the victim system.

If the server is configured to allow anonymous access, an attacker can exploit this vulnerability by uploading a malicious file that is accessible by anonymous users and request this file from the victim system.

The server can be configured to allow only specific users, groups, or roles to upload files. An attacker can exploit this vulnerability by requesting a file that is accessible only by some specific users, groups, or roles and request this file from the victim system.

The server can be configured to allow a certain type of file request. An attacker can exploit this vulnerability by requesting a file that is of a certain type and request this file from the victim system.

The server can be configured to accept only certain types of requests

Vulnerability Scenario:

Vulnerability Scenario: The attacker injects malicious script code in a website to conduct XSS (cross-site scripting) attack and gain access to the system of the end user.
The vulnerability exists in the way the server handles the remote file request. An attacker can exploit this vulnerability by uploading a malicious file such as a script file, image, or PowerShell script and request this file from the victim system.
If the server is configured to allow anonymous access, an attacker can exploit this vulnerability by uploading a malicious file that is accessible by anonymous users and request this file from the victim system.
The server can be configured to allow only specific users, groups, or roles to upload files. An attacker can exploit this vulnerability by requesting a file that is accessible only by some specific users, groups, or roles and request this file from the victim system.
The server can be configured to allow a certain type of file request. An attacker can exploit this vulnerability by requesting a file that is of a certain type and request this file from the victim system.

Vulnerability overview

This vulnerability is actively being exploited in the wild. The attack is a form of XSS (cross-site scripting) vulnerability that allows attackers to gain access to the system of the end user by injecting malicious script code into the website. There are two ways of exploiting this vulnerability; one is by uploading a malicious file on the system or by downloading a malicious file from the Internet.

The vulnerability exists in the way that remote files are handled by the server - an attacker can exploit this vulnerability if they upload/download a malicious file such as a script, image, or PowerShell script and request it from the victim system.
If configured to allow anonymous access, an attacker can exploit this vulnerability if they upload/download a malicious file that is accessible by anonymized users and request it from the victim system.
The server can be configured with settings that allow only specific users, groups, or roles to upload files. An attacker exploits this vulnerabilty if they request a file accessible only by some specific users, groups, or roles and request it from the victim system.
The server can be configured with settings that allow certain types of file requests. An attacker exploits this vulnerability if they request a file of certain types and request it from the victim system.


URL to exploit:
https://www.example.com/index.php?option=com_adsmanager&task=adclick&type=1&clk=%2Fw%2Fexample-link-1

Remote File Upload Vulnerability

If you are concerned about this vulnerability, then there are some things you can do. You should make sure the server is configured to allow anonymous access and that you have a firewall in place. In addition, you should have an application control policy or whitelist defined to ensure that only allowed file types can be uploaded and downloaded. You also need to set up controls for matching requests with specific users, groups, or roles. And finally, you will want to configure your application to only accept certain types of requests.

References

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