CVE-2021-20182
Last modified
CVE-2021-20182 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A privilege escalation flaw was found in openshift4/ose-docker-builder. The build container runs with high privileges using a chrooted environment instead of runc. EPSS estimates a 1.15% chance of exploitation in the next 30 days.
Description
A privilege escalation flaw was found in openshift4/ose-docker-builder. The build container runs with high privileges using a chrooted environment instead of runc. If an attacker can gain access to this build container, they can potentially utilize the raw devices of the underlying node, such as the network and storage devices, to at least escalate their privileges to that of the cluster admin. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Openshift Container Platform | >= 4.4, < 4.4.33 |
| Redhat | Openshift Container Platform | >= 4.5, < 4.5.30 |
| Redhat | Openshift Container Platform | >= 4.6, < 4.6.15 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1915110Issue Tracking, Mitigation, Patch, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1915110Issue Tracking, Mitigation, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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