CVEvulnerability

CVE-2020-11995

9.8 CRITICAL Published 2021-01-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-01-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-502

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.

Affected configurations

• apache dubbo (>= 2.5.0 <= 2.5.10) • apache dubbo (>= 2.6.0 <= 2.6.8) • apache dubbo (>= 2.7.0 <= 2.7.7)

Related

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References