Medium severity · published Jan 21, 2021
CVE-2020-8554
Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address
5.0
CVSS
8.7%
EPSS
No
On KEV
Description
Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)8.7% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Communications Cloud Native Core Network Slice Selection Function · Oracle
1.2.1 · source: NVD
CC
Communications Cloud Native Core Policy · Oracle
1.15.0 · source: NVD
CC
Communications Cloud Native Core Service Communication Proxy · Oracle
1.14.0 · source: NVD
KU
Kubernetes · Kubernetes
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8554
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8554
Exploit
https://github.com/kubernetes/kubernetes/issues/97076
Mailing List
https://groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8
kubernetes.io
https://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cves/
lists.apache.org
https://lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40%40%3Ccommits.druid.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942%40%3Ccommits.druid.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/rcafa485d63550657f068775801aeb706b7a07140a8ebbdef822b3bb3%40%3Ccommits.druid.apache.org%3E
More from Kubernetes
9.8
CVE-2018-1002105
In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially…
9.8
CVE-2018-1002101
In Kubernetes versions 1.9.0-1.9.9, 1.10.0-1.10.5, and 1.11.0-1.11.1, user input was handled insecurely while setting up volume mounts on Windows nodes, which could lead to…
9.8
CVE-2017-1000056
Kubernetes version 1.5.0-1.5.4 is vulnerable to a privilege escalation in the PodSecurityPolicy admission plugin resulting in the ability to make use of any existing…
9.8
CVE-2016-1906
Openshift allows remote attackers to gain privileges by updating a build configuration that was created with an allowed type to a type that is not allowed
9.6
CVE-2017-1002101
In Kubernetes versions 1.3.x, 1.4.x, 1.5.x, 1.6.x and prior to versions 1.7.14, 1.8.9 and 1.9.4 containers using subpath volume mounts with any volume type (including…