Remote code execution in Showtime2 plugin for CMS Made Simple



| Updated: 2019-10-08
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-9692
CWE-ID CWE-434
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Showtime2
Web applications / Modules and components for CMS

Vendor cmsmadesimple.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Arbitrary file upload

EUVDB-ID: #VU21610

Risk: Medium

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2019-9692

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to the "class.showtime2_image.php" file does not ensure that a watermark file has a standard image file extension (GIF, JPG, JPEG, or PNG). A remote authenticated attacker can upload and execute arbitrary file on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Showtime2: 3.4.2 - 3.6.2

CPE2.3 External links

https://viewsvn.cmsmadesimple.org/diff.php?repname=showtime2&path=%2Ftrunk%2Flib%2Fclass.showtime2_image.php&rev=47
https://www.rapid7.com/db/modules/exploit/multi/http/cmsms_showtime2_rce
https://forum.cmsmadesimple.org/viewtopic.php?f=1&t=80285


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.



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