Deserialization in Red Hat A-Mq Streams
CVE-2021-4178
A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (27.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Red Hat A-Mq Streams — versions 2.0.1
- Red Hat Build Of Quarkus — versions 2.2.5
- Red Hat Descision Manager — versions 7.0
- Red Hat Fabric8-Kubernetes — versions 5.0.0, 5.8.0
- Red Hat Fuse — versions 7.11
- Red Hat Integration Camel K
- Red Hat Integration Camel Quarkus — versions 2.2.1
- Red Hat Openshift Application Runtimes
- Red Hat Process Automation — versions 7.0
- Kubernetes-Client — versions Affects 5.x versions, Fixed in kubernetes-client v5.0.3 and above.
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2021-4178 (Vendor Advisory)
- github.com/advisories/GHSA-98g7-rxmf-rrxm (Third Party Advisory)
- github.com/fabric8io/kubernetes-client/issues/3653 (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-4178?
- CVE-2021-4178 is a medium-severity vulnerability in Red Hat A-Mq Streams, classified under Deserialization of Untrusted Data. CVSS score: 6.7/10. Published 2022-08-24.
- How severe is CVE-2021-4178?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2021-4178 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.