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Symfony 3.4.0 <= 3.4.34, 4.2.0 <= 4.2.11 and 4.3.0 <= 4.3.7 Remote Code Execution Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Symfony is prone to a remote code execution.
Insight
Insight
When an instance of TagAwareAdapter is destructed, Symfony execute callables stored in privates properties in order to invalidates tags. When the instance has been created by unserializing an external payload, those properties are not checked leading to a remote code execution.
Affected Software
Affected Software
Symfony 3.4.0 to 3.4.34, 4.2.0 to 4.2.11 and 4.3.0 to 4.3.7.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
The issue has been fixed in Symfony 3.4.35, 4.2.12 and 4.3.8. NOTE: No fixes are provided for Symfony 3.1, 3.2, 3.3, 4.0 and 4.1 as they are not maintained anymore.