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.
References
Link Resource
http://packetstormsecurity.com/files/163564/Concrete5-8.5.5-Phar-Deserialization.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2021/Jul/36 Exploit Mailing List Third Party Advisory
https://hackerone.com/reports/1063039 Permissions Required Third Party Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2021-07-27T05:38:42

Updated: 2021-07-27T19:39:35

Reserved: 2021-07-16T00:00:00


Link: CVE-2021-36766

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2021-07-30T14:15:18.283

Modified: 2021-09-22T16:56:08.547


Link: CVE-2021-36766

JSON object: View

cve-icon Redhat Information

No data.

CWE