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MonoCMS Blog 1.0 File Deletion / CSRF / Hardcoded Credentials

MonoCMS Blog 1.0 File Deletion / CSRF / Hardcoded Credentials
Posted Oct 1, 2020
Authored by Shahrukh Iqbal Mirza

MonoCMS Blog version 1.0 suffers from arbitrary file deletion, cross site request forgery, and information disclosure vulnerabilities.

tags | exploit, arbitrary, vulnerability, file inclusion, info disclosure, csrf
advisories | CVE-2020-25986, CVE-2020-25987
MD5 | 858c4bad79460948ebff42b9ed1fd0cd

MonoCMS Blog 1.0 File Deletion / CSRF / Hardcoded Credentials

Change Mirror Download
# Exploit Title: MonoCMS Blog 1.0 - Arbitrary File Deletion (Authenticated)
# Date: 2020-09-20
# Exploit Author: Shahrukh Iqbal Mirza (@shahrukhiqbal24)
# Vendor Homepage: https://monocms.com/download
# Software Link: https://monocms.com/download
# Version: 1.0
# Tested On: Windows 10 (XAMPP)
# CVE: N/A

Proof of Concept:
1. In the upload images page, make a request to delete an already uploaded image. If no image present, upload an image and then make a request to delete that image.
2. Notice the Request URL
<ip>/base_path_to_cms/uploads?delimg=../../../../../Temp/Copy.txt
This deletes the file ‘copy.txt’ from C:\Temp
3. Use simple directory traversals to delete arbitrary files.

Note: php files can be unlinked and not deleted.


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# Exploit Title: MonoCMS Blog - Account Takeover (CSRF)
# Date: September 29th, 2020
# Exploit Author: Shahrukh Iqbal Mirza (@shahrukhiqbal24)
# Vendor Homepage: https://monocms.com/download
# Software Link: https://monocms.com/download
# Version: 1.0
# Tested On: Windows 10 (XAMPP)
# CVE: CVE-2020-25986


Proof of Concept:
Login using a test user (attacker). Make a password change request, and enter a new password and then intercept the request (in BurpSuite). Generate a CSRF PoC. Save the HTML code in an html file. Login as another user (victim), open the CSRF-PoC html file, and click on submit request. Victim user’s password will be changed.


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# Exploit Title: MonoCMS Blog - Sensitive Information Disclosure (Hardcoded Credentials)
# Date: September 29th, 2020
# Exploit Author: Shahrukh Iqbal Mirza (@shahrukhiqbal24)
# Vendor Homepage: https://monocms.com/download
# Software Link: https://monocms.com/download
# Version: 1.0
# Tested On: Windows 10 (XAMPP)
# CVE: CVE-2020-25987


Proof of Concept:
Hard-coded admin and user hashes can be found in the “log.xml” file in the source-code files for MonoCMS Blog. Hash type is bcrypt and hashcat mode 3200 can be used to crack the hash.
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