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CVE-2021-41766— Insecure Java Deserialization in Apache Karaf

Quick assessment

Affected
Apache Software Foundation Apache Karaf
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 Karaf是美国阿帕奇（Apache）基金会的一款用于部署应用程序和组件的轻量级的OSGi（Java动态化模块化系统）容器。 Apache Karaf 存在代码问题漏洞，该漏洞源于在处理序列化数据时输入验证不安全，远程攻击者可利用该漏洞可以将专门制作的数据传递给应用程序，并在目标系统上执行任意代码。

AI Predicted 7.5 Difficulty: Moderate EPSS 2.03% · P81

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-41766

Vulnerability Information
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Vulnerability Title
Insecure Java Deserialization in Apache Karaf
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Karaf allows monitoring of applications and the Java runtime by using the Java Management Extensions (JMX). JMX is a Java RMI based technology that relies on Java serialized objects for client server communication. Whereas the default JMX implementation is hardened against unauthenticated deserialization attacks, the implementation used by Apache Karaf is not protected against this kind of attack. The impact of Java deserialization vulnerabilities strongly depends on the classes that are available within the targets class path. Generally speaking, deserialization of untrusted data does always represent a high security risk and should be prevented. The risk is low as, by default, Karaf uses a limited set of classes in the JMX server class path. It depends of system scoped classes (e.g. jar in the lib folder).
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 Karaf 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Karaf是美国阿帕奇（Apache）基金会的一款用于部署应用程序和组件的轻量级的OSGi（Java动态化模块化系统）容器。 Apache Karaf 存在代码问题漏洞，该漏洞源于在处理序列化数据时输入验证不安全，远程攻击者可利用该漏洞可以将专门制作的数据传递给应用程序，并在目标系统上执行任意代码。
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 Karaf Apache Karaf ~ 4.3.6 -

II. Public POCs for CVE-2021-41766

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III. Intelligence Information for CVE-2021-41766

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Other References for CVE-2021-41766 (1)

IV. Related Vulnerabilities

Same product: Apache Karaf
Same vendor: Apache Software Foundation