CVE-2021-36766
CVSS V2 Medium 6.5
CVSS V3 High 7.2
Description
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.
Overview
- CVE ID
- CVE-2021-36766
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-30T14:15:18
- Last Modified Date
- 2021-09-22T16:56:08
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* | 1 | OR | 8.5.6 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7.2
- Base Severity
- HIGH
- Exploitability Score
- 1.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| 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 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-36766 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36766 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:53:59 | Added to TrackCVE | |||
| 2022-12-05 07:04:23 | 2021-07-30T14:15Z | 2021-07-30T14:15:18 | CVE Published Date | updated |
| 2022-12-05 07:04:23 | 2021-09-22T16:56:08 | CVE Modified Date | updated | |
| 2022-12-05 07:04:23 | Analyzed | Vulnerability Status | updated |