High severity · published Feb 23, 2021
CVE-2021-20182
A privilege escalation flaw was found in openshift4/ose-docker-builder
8.8
CVSS
1.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OC
Openshift Container Platform · Redhat
4.4 before 4.4.33; 4.5 before 4.5.30; 4.6 before 4.6.15 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20182
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20182
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1915110
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