relatedcode/Messenger 7bcd20b - Broken Access Control
|Name||relatedcode/Messenger 7bcd20b - Broken Access Control|
|Affected versions||Version 7bcd20b|
|Kind||Improper authorization control for web services|
|Rule||039. Improper authorization control for web services|
|CVSSv3 Base Score||6.5|
Relatedcode/Messenger version 7bcd20b allows an authenticated external attacker to access existing chats in the workspaces of any user of the application. This is possible because the application does not validate permissions correctly.
The application does not validate the application permissions correctly. Thanks to this we can access confidential information of any user registered on the server. Here we will see how an attacker manages to access the internal chats of the victim user:
To exploit this broken access control, one must first exploit another vulnerability present in the application. This vulnerability involves the disclosure of sensitive information.
Thanks to it I was able to gather the necessary data to be able to obtain the internal chat logs of other users of the application:
An authenticated remote attacker can access internal chat logs of arbitrary users of the application.
Our security policy
We have reserved the CVE-2022-41708 to refer to this issue from now on.
Version: relatedcode/Messenger 7bcd20b
Operating System: GNU/Linux
There is currently no patch available for this vulnerability.
The vulnerability was discovered by Carlos Bello from Fluid Attacks' Offensive Team.
Vendor page https://github.com/relatedcode/Messenger
Vendor replied acknowledging the report.
Vendor Confirmed the vulnerability.