CVE-2021-20218
This flaw allows a malicious pod/container to cause applications using the fabric8 kubernetes-client `copy` command to extract files outside the working path.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in the fabric8 kubernetes-client in version 4.2.0 and after. This flaw allows a malicious pod/container to cause applications using the fabric8 kubernetes-client `copy` command to extract files outside the working path. The highest threat from this vulnerability is to integrity and system availability. This has been fixed in kubernetes-client-4.13.2 kubernetes-client-5.0.2 kubernetes-client-4.11.2 kubernetes-client-4.7.2
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 1.31% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- redhat/kubernetes-client · redhat/a-mq online · redhat/build of quarkus · redhat/codeready studio · redhat/descision manager · redhat/integration camel k · redhat/jboss fuse · redhat/openshift container platform · redhat/process automation
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1923405Issue Tracking, Vendor Advisory
- https://github.com/fabric8io/kubernetes-client/issues/2715Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1923405Issue Tracking, Vendor Advisory
- https://github.com/fabric8io/kubernetes-client/issues/2715Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.