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CVE-2021-36766
Good to know:
Date: July 27, 2021
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.
Language: PHP
Severity Score
Severity Score
Weakness Type (CWE)
Deserialization of Untrusted Data
CWE-502Top Fix
Upgrade Version
Upgrade to version concrete5/concrete5 - dev-marketplace-migration;concrete5/concrete5 - dev-feature/usable-welcome-page;concrete5/concrete5 - 9.0.0RC1;concrete5/concrete5 - 8.5.6RC1;concrete5/concrete5 - dev-allow-install-php-8.2;concrete5/concrete5 - dev-feature/composer-php8-support;concrete5/concrete5 - dev-fix-redis-config;concrete5/concrete5 - dev-dependabot/npm_and_yarn/build/postcss-and-vue-loader-8.4.31;concrete5/concrete5 - dev-fix-h1-1102211;concrete5/concrete5 - dev-dependabot/npm_and_yarn/build/json5-1.0.2;concrete5/concrete5 - dev-backport-9975;concrete5/concrete5 - 8.5.0RC2;concrete5/concrete5 - dev-dependabot/npm_and_yarn/build/async-2.6.4;concrete5/concrete5 - 8.5.x-dev;concrete5/core - 8.5.6RC1;concrete5/core - 9.0.0RC1;concrete5/core - 8.4.2;concrete5/core - 8.5.2;concrete5/core - 8.5.1
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | HIGH |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | HIGH |
| Availability (A): | HIGH |
CVSS v2
| Base Score: |
|
|---|---|
| Access Vector (AV): | NETWORK |
| Access Complexity (AC): | LOW |
| Authentication (AU): | SINGLE |
| Confidentiality (C): | PARTIAL |
| Integrity (I): | PARTIAL |
| Availability (A): | PARTIAL |
| Additional information: |