#VU54995 Deserialization of Untrusted Data in concrete5 - CVE-2021-36766

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Main Vulnerability Database Vulnerabilities #VU54995

#VU54995 Deserialization of Untrusted Data in concrete5 - CVE-2021-36766

Published: July 20, 2021


Vulnerability identifier: #VU54995
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-36766
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
concrete5
Software vendor:
PortlandLabs

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data passed via the "logFile" parameter in the file-based logging feature. A remote privileged user can pass specially crafted data to the application and execute arbitrary PHP 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.

External links