CVE-2021-43297: Dubbo Hessian cause RCE when parse error
A deserialization vulnerability existed in dubbo hessian-lite 3.2.11 and its earlier versions, which could lead to malicious code execution. Most Dubbo users use Hessian2 as the default serialization/deserialization protocol, during Hessian catch unexpected exceptions, Hessian will log out some imformation for users, which may cause remote command execution. This issue affects Apache Dubbo Apache Dubbo 2.6.x versions prior to 2.6.12; Apache Dubbo 2.7.x versions prior to 2.7.15; Apache Dubbo 3.0.x versions prior to 3.0.5.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache Dubbo 2.6.xto a version that resolves this vulnerability.Fixed in 2.6.12 - Upgrade
Upgrade
Apache Dubbo 2.7.xto a version that resolves this vulnerability.Fixed in 2.7.15 - Upgrade
Upgrade
Apache Dubbo 3.0.xto a version that resolves this vulnerability.Fixed in 3.0.5
Event History
Frequently Asked Questions
Which deployments are affected?
Apache Dubbo 2.6.x versions before 2.6.12, 2.7.x versions before 2.7.15, and 3.0.x versions before 3.0.5 are affected. The issue is in dubbo hessian-lite 3.2.11 and earlier.
Is a default Dubbo configuration likely exposed?
Most Dubbo users use Hessian2 as the default serialization and deserialization protocol. Deployments using that default protocol should be treated as potentially affected if they run an affected version.
Does exploitation require authentication or user interaction?
The supplied severity vector indicates network exploitation with low attack complexity and no privileges or user interaction required. Successful exploitation can result in remote command execution with high confidentiality, integrity, and availability impact.
Is public exploit material available?
Yes. An exploit was published on 2022-01-17.