Deserialization of Untrusted Data in CMS Made Simple - CVE-2019-9055
Published: October 8, 2019 / Updated: February 14, 2024
Vulnerability identifier: #VU21613
CSH Severity: High
CVSS v4: 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]
CVE-ID: CVE-2019-9055
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
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.
Affected software
CMS Made Simple
How to mitigate CVE-2019-9055
Install updates from vendor's website.
CMS Made Simple - update to 2.2.10