Apollo is a configuration management system. Prior to version 2.1.0, there are potential security issues if users expose apollo-configservice to the internet, which is not recommended. This is because there is no authentication feature enabled for the built-in eureka service. Malicious hackers may access eureka directly to mock apollo-configservice and apollo-adminservice. Login authentication for eureka was added in version 2.1.0. As a workaround, avoid exposing apollo-configservice to the internet.

Affected: Maven: com.ctrip.framework.apollo:apollo

### Impact If users expose the apollo-configservice to the internet(which is not recommended), there are potential security issues since there is no authentication feature enabled for the built-in eureka service. Malicious hackers may access eureka directly to mock apollo-configservice and apollo-adminservice .

### Patches Login authentication for eureka was added in https://github.com/apolloconfig/apollo/pull/4663 and was released in [v2.1.0](https://github.com/apolloconfig/apollo/releases/tag/v2.1.0).

### Workarounds To fix the potential issue without upgrading, simply follow the advice that does not expose apollo-configservice to the internet.

### References [Apollo Security Guidence](https://www.apolloconfig.com/#/en/portal/apollo-user-guide?id=_71-security-related)

### For more information If you have any questions or comments about this advisory: * Open an issue in [issue](https://github.com/apolloconfig/apollo/issues) * Email us at [apollo-config@googlegroups.com](mailto:apollo-config@googlegroups.com)