CVE-2019-8141

A remote code execution vulnerability exists in Magento 2.1 prior to 2.1.19, Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3. An authenticated user with administrative privileges (system level import) can execute arbitrary code through a Phar deserialization vulnerability in the import functionality.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• https://magento.com/security/patches/magento-2.3.3-and-2.2.10-security-update
• https://magento.com/security/patches/magento-2.3.3-and-2.2.10-security-update