full-disclosure - [FD] CVE-2020-25790

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Date: Tue, 6 Oct 2020 10:46:57 -0300
From: Rodolfo Augusto do Nascimento Tavares <rodolfo.tavares@...pest.com.br>
To: fulldisclosure@...lists.org
Subject: [FD] CVE-2020-25790

Hello, all

Could you please publish the item below? I attached the text too. Thank you.

=====[ Tempest Security Intelligence - ADV-09/2020
]==========================

Typesetter CMS

Author: Rodolfo Tavares

Tempest Security Intelligence - Recife, Pernambuco - Brazil

=====[ Table of Contents]==================================================

   - Overview
   - Detailed description
   - Timeline of disclosure
   - Thanks & Acknowledgements
   - References

=====[ Vulnerability
Information]=============================================

   - Class: Unrestricted Upload of File with Dangerous CWE-434
   - CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
   - CVE-2020-25790

=====[ Overview]========================================================

   - System affected : Typesetter - Version 5.1
   - Software Version : Version 5.1
   - Impact : Typesetter 5.1 is vulnerable to code execution via
   /index.php/Admin/Uploaded. An attacker can exploit this by uploading a zip
   that contains a malicious php file inside. After extracting the zip file
   containing the malicious php file, it is possible to execute commands on
   the target operation system.

=====[ Detailed
description]=================================================

The CMS Typesetter has functionality (web interface) where it is possible
through an account with privileges to perform uploads. Through this
functionality, it is possible to upload a .zip file that contains a
malicious .php file. In the same functionality, there is also the
possibility to extract the file through the same web interface, the
attacker only needs to extract the .zip that was previously loaded and
click on the malicious .php file to execute commands in the operating
system.

=====[ Timeline of
disclosure]===============================================

18/Sep/2020 - Responsible disclosure was initiated with the vendor.
18/Sep/2020 - Typesetter confirmed the issue;
18/Sep/2019 - The vendor fixed the vulnerability in version 5.2.
19/Sep/2020 - CVE was assigned as CVE-2020-25790

=====[ Thanks & Acknowledgements]========================================

   - Tempest Security Intelligence [4]

=====[ References ]=====================================================

[1][ https://cwe.mitre.org/data/definitions/434.html|
https://cwe.mitre.org/data/definitions/434.html]

[2][ https://github.com/Typesetter/Typesetter/issues/674|
https://github.com/Typesetter/Typesetter/issues/674]

[3][ http://www.tempest.com.br|http://www.tempest.com.br/]

=====[ EOF ]===========================================================

View attachment "adv.txt" of type "text/plain" (2449 bytes)

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