CVE-2021-4294 OpenShift OSIN CheckClientSecret timing discrepancy
An attacker can exploit timing discrepancies in OpenShift OSIN to potentially disclose client secret information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-4294?
CVE-2021-4294 is a low-severity vulnerability in Redhat Openshift Container Platform, published on 28 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2021-4294?
3 open source packages ship an affected version, including github.com/openshift/osin. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
github.com/openshift/osin Go | All versions | 1.0.2-0.20210113124101-8612686d6dda |
github.com/openshift/osin Go | All versions | 1.0.2-0.20210113124101-8612686d6dda |
github.com/openshift/osin Go | All versions | 1.0.2-0.20210113124101-8612686d6dda |
Products include Redhat Openshift Container Platform, Redhat Openshift Osin.
How do I fix CVE-2021-4294?
Upgrade github.com/openshift/osin to 1.0.2-0.20210113124101-8612686d6dda or later.
Is CVE-2021-4294 being exploited?
There is no known exploitation of CVE-2021-4294 in the wild and no public exploit code.
Other vulnerabilities in Redhat Openshift Container Platform
- CVE-2020-27836 Missing authorization in cluster-ingress-operator
- CVE-2018-1085 Misconfiguration in openshift-ansible
- CVE-2026-54099 Privilege escalation in Red Hat OpenShift Container Platform 4
- CVE-2026-1784 Ose-cluster-ingress-operator: remote code execution through haproxy configuration injection
- CVE-2021-20182 Privilege escalation in openshift
Sources
Also known as GHSA-m7qp-cj9p-gj85, GO-2022-1201.