Global infos:

Concrete5 through 8.5.5 deserializes Untrusted Data. The vulnerable code is located within the controllers/single_page/dashboard/system/environment/logging.php Logging::update_logging() method. User input passed through the logFile request parameter is not properly sanitized before being used in a call to the file_exists() PHP function. This can be exploited by malicious users to inject arbitrary PHP objects into the application scope (PHP Object Injection via phar:// stream wrapper), allowing them to carry out a variety of attacks, such as executing arbitrary PHP code.

CVE Status: Modified

References:

[email protected]

[email protected]

[email protected]

af854a3a-2127-422b-91ae-364da2661108

af854a3a-2127-422b-91ae-364da2661108

af854a3a-2127-422b-91ae-364da2661108

Metrics:

Attribute	Value
Attack Complexity	LOW
Attack Vector	NETWORK
Availability Impact	HIGH
Base Score	7.2
Base Severity	HIGH
Confidentiality Impact	HIGH
Integrity Impact	HIGH
Privileges Required	HIGH
Scope	UNCHANGED
User Interaction	NONE
Vector String	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Exploitability Score	1.2
Impact Score	5.9
Source	[email protected]
Type	Primary

Links:

Exploit-db
Github