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SugarCRM 12.2.0 Shell Upload

SugarCRM 12.2.0 Shell Upload
Posted Aug 23, 2023
Authored by EgiX | Site karmainsecurity.com

SugarCRM versions 12.2.0 and below suffers from a multiple step remote shell upload vulnerability.

tags | exploit, remote, shell
advisories | CVE-2023-35808
SHA-256 | 6bee957dcfc710f3709d5cc3ba3aa33ecb6f07d987d6836c2df36e2f2011c8a8

SugarCRM 12.2.0 Shell Upload

Change Mirror Download
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SugarCRM <= 12.2.0 (Notes) Unrestricted File Upload Vulnerability
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[-] Software Link:

https://www.sugarcrm.com


[-] Affected Versions:

Version 12.2.0 and prior versions.
Version 12.0.2 and prior versions.
Version 11.0.5 and prior versions.


[-] Vulnerability Description:

When handling the "save" action within the "Notes" module the
application allows uploading
of any kind of file into the /upload/ directory. This one is protected
by the main SugarCRM
.htaccess file, i.e. it doesn't allow access/execution for PHP files.
However, this behaviour
can be overridden if a subdirectory contains another .htaccess file. So,
an attacker can
leverage the vulnerability to firstly upload a new .htaccess file and
then to upload the
PHP code they want to execute.


[-] Proof of Concept:

https://karmainsecurity.com/pocs/CVE-2023-35808.php


[-] Solution:

Upgrade to version 12.3.0, 12.0.3, 11.0.6, or later.


[-] Disclosure Timeline:

[14/02/2023] - Vendor notified
[12/04/2023] - Fixed versions released
[17/06/2023] - CVE number assigned
[23/08/2023] - Publication of this advisory


[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2023-35808 to this vulnerability.


[-] Credits:

Vulnerability discovered by Egidio Romano.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2023-05


[-] Other References:

https://support.sugarcrm.com/Resources/Security/sugarcrm-sa-2023-006/

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