Home/CVE/A privilege escalation flaw was found in openshift4/ose-docker-builder. The build container runs with high privileges us
CVE

CVE-2021-20182

A privilege escalation flaw was found in openshift4/ose-docker-builder. The build container runs with high privileges us

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.

HIGH · CVSS 8.8 EPSS 0.0053
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0

Weakness Classification

Affected Products & Versions

3

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Feb 2021 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Advisories

3
rhsaRHSA-2021:0281Important
rhsaRHBA-2021:0235Important
rhsaRHBA-2021:0231Important
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=1915110Issue TrackingMitigationPatchVendor Advisory
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