Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Dubbo | >= 2.5.0, <= 2.5.10 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread.html/r5b2df4ef479209dc4ced457b3d58a887763b60b935Mailing ListVendor Advisory
- https://lists.apache.org/thread.html/r5b2df4ef479209dc4ced457b3d58a887763b60b935Mailing ListVendor Advisory
FAQ
What is CVE-2020-11995?
CVE-2020-11995 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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/deserializatio...
How severe is CVE-2020-11995?
CVE-2020-11995 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-11995?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Dubbo.