CVE-2020-11995

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 Version 3.1

nvd

CVE ID: CVE-2020-11995
Base Score: 9.8
Base Severity: CRITICAL
Vector String:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9

CVSS Version 2.0

nvd

CVE ID: CVE-2020-11995
Base Score: 7.5
Base Severity: HIGH
Vector String:AV:N/AC:L/Au:N/C:P/I:P/A:P

Refrence: NVD