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CVE-2021-36163— Unsafe deserialization in providers using the Hessian protocol

Quick assessment

Affected
Apache Software Foundation Apache Dubbo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Dubbo是美国阿帕奇（Apache）基金会的一款基于Java的轻量级RPC（远程过程调用）框架。该产品提供了基于接口的远程呼叫、容错和负载平衡以及自动服务注册和发现等功能。 Apache Dubbo 存在安全漏洞，该漏洞源于在 Apache Dubbo 中，用户可以选择使用 Hessian 协议。Hessian 协议是在 HTTP 之上实现的，并将 POST 请求的主体直接传递给 HessianSkeleton：新的 HessianSkeleton 是在没有任何序列化工厂配置的情况下创建的

AI Predicted 9.8 Difficulty: Easy EPSS 3.25% · P88

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-36163

Vulnerability Information
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Vulnerability Title
Unsafe deserialization in providers using the Hessian protocol
Source: CVE Program / CVE List V5
Vulnerability Description
In Apache Dubbo, users may choose to use the Hessian protocol. The Hessian protocol is implemented on top of HTTP and passes the body of a POST request directly to a HessianSkeleton: New HessianSkeleton are created without any configuration of the serialization factory and therefore without applying the dubbo properties for applying allowed or blocked type lists. In addition, the generic service is always exposed and therefore attackers do not need to figure out a valid service/method name pair. This is fixed in 2.7.13, 2.6.10.1
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Dubbo 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Dubbo是美国阿帕奇（Apache）基金会的一款基于Java的轻量级RPC（远程过程调用）框架。该产品提供了基于接口的远程呼叫、容错和负载平衡以及自动服务注册和发现等功能。 Apache Dubbo 存在安全漏洞，该漏洞源于在 Apache Dubbo 中，用户可以选择使用 Hessian 协议。Hessian 协议是在 HTTP 之上实现的，并将 POST 请求的主体直接传递给 HessianSkeleton：新的 HessianSkeleton 是在没有任何序列化工厂配置的情况下创建的
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Dubbo Apache Dubbo 2.7.x ~ 2.7.12 -

II. Public POCs for CVE-2021-36163

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III. Intelligence Information for CVE-2021-36163

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Mailing List Discussions for CVE-2021-36163 (1)

IV. Related Vulnerabilities

Same product: Apache Dubbo
Same vendor: Apache Software Foundation

V. Comments for CVE-2021-36163

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