CVE-2018-11766: Arbitrary Command Execution in Hadoop
Summary
CVE-2018-11766: Arbitrary Command Execution in Hadoop. Affects org.apache.hadoop:hadoop-main versions >= 2.7.4, < 2.7.7. Fixed in 2.7.7. How to fix ↓
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Background
Apache Hadoop is an open-source framework used for distributed storage and processing of large datasets. It provides a scalable and reliable platform for big data analytics. The 'org.apache.hadoop:hadoop-main' package is a core component of Hadoop, responsible for various functionalities such as resource management and job scheduling. However, versions 2.7.4 to 2.7.6 of this package are vulnerable to an incomplete security fix for CVE-2016-6811.
Vulnerability Detail
The vulnerability allows a user with the ability to escalate to the 'yarn' user to execute arbitrary commands as the root user. This can lead to unauthorized access, privilege escalation, and potential compromise of the entire Hadoop system. The incomplete security fix in the affected versions leaves a loophole for malicious users to exploit and gain unauthorized control over the system.
How To Fix
Latest published version: 3.5.0 as of 22 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
2.7.7
This is the first release that contains the fix.
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Workaround
There is no specific workaround mentioned for this vulnerability. However, it is strongly advised to apply the recommended fix by upgrading to the latest version of the 'org.apache.hadoop:hadoop-main' package.
Conclusion
The vulnerability CVE-2018-11766 in the 'org.apache.hadoop:hadoop-main' package of Apache Hadoop versions 2.7.4 to 2.7.6 allows for arbitrary command execution as the root user. It is crucial to promptly upgrade to version 2.7.7 or later to mitigate the risk of unauthorized access and potential compromise of the Hadoop system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Apache Hadoop is an open-source framework for distributed storage and processing of large datasets. It provides a scalable and reliable platform for big data analytics.
The 'org.apache.hadoop:hadoop-main' package is a core component of Hadoop, responsible for various functionalities such as resource management and job scheduling.
CVE-2018-11766 is a vulnerability in Apache Hadoop versions 2.7.4 to 2.7.6, which allows a user to execute arbitrary commands as the root user.
The vulnerability can lead to unauthorized access, privilege escalation, and potential compromise of the entire Hadoop system.
To fix this vulnerability, it is recommended to upgrade the 'org.apache.hadoop:hadoop-main' package to version 2.7.7 or later.
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