CVE-2021-20182

HIGH
8.8
CVSS Score
Published: February 23, 2021 at 09:32 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
2 products affected across 1 vendorOpenShift Container PlatformOpenshift

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Severity
HIGH8.8
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.4 ≤ v < 4.4.334.5 ≤ v < 4.5.304.6 ≤ v < 4.6.15
Affected range stops below 4.4.33, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5.30, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.6.15, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_MISCIssue TrackingMitigationPatchVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1915110

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-552

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