CVE-2021-36766

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.

CVSS v3.0 7.2 HIGH
CVSS v2.0 6.5 MEDIUM

7.2^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*

Information

Published : 2021-07-30 07:15

Updated : 2021-09-22 09:56

NVD link : CVE-2021-36766

Mitre link : CVE-2021-36766

JSON object : View

CWE

CWE-502

Deserialization of Untrusted Data

Products Affected

concretecms

concrete_cms

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7.2 /10