A deserialization vulnerability existed in dubbo 2.7.5 and its earlier versions, which could lead to malicious code execution. Most Dubbo users use Hessian2 as the default serialization/deserialization protool, during Hessian2 deserializing the HashMap object, some functions in the classes stored in HasMap will be executed after a series of program calls, however, those special functions may cause remote command execution. For example, the hashCode() function of the EqualsBean class in rome-1.7.0.jar will cause the remotely load malicious classes and execute malicious code by constructing a malicious request. This issue was fixed in Apache Dubbo 2.6.9 and 2.7.8.
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Dubbo | Apache | 2.5.0 (including) | 2.5.10 (including) |
| Dubbo | Apache | 2.6.0 (including) | 2.6.8 (including) |
| Dubbo | Apache | 2.7.0 (including) | 2.7.7 (including) |