#VU21613 Deserialization of Untrusted Data in CMS Made Simple - CVE-2019-9055
Published: October 8, 2019 / Updated: February 14, 2024
Vulnerability identifier: #VU21613
Vulnerability risk: High
CVSSv4.0: 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:Amber
CVE-ID: CVE-2019-9055
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
CMS Made Simple
CMS Made Simple
Software vendor:
cmsmadesimple.org
cmsmadesimple.org
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in the "DesignManager" module in the "action.admin_bulk_css.php" and "action.admin_bulk_template.php" files. A remote authenticated attacker with Designer permission can reach an unserialize call with a crafted value in the "m1_allparms" parameter and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.