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CVE-2018-1002102· NVD / CVE Program· CNA kubernetes

Kubernetes API server follows unvalidated redirects from streaming Kubelet endpoints

Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.

LowCVSS 2.6 · v3.1—No exploit Fix available
Published
Dec 5, 2019
Updated
Jun 16, 2026
EPSS
0.6% · 48th percentile
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Report tools

JSON

Action score

10

Monitor

Low priority for now.

CVSS
10 / 40 · 2.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CNA vs NVD score

NVD
2.6
CNA · kubernetes
2.6
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
kuberneteskubernetes
fedoraprojectfedora

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • kubernetes kubernetes1.10.0 and later · up to 1.13.13 inclusive
  • kubernetes kubernetes1.14.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (kubernetes). Independent of NVD's CPE analysis and usually ahead of it.

  • Kubernetes Kubernetes

    • v1.14 and later · before v1.14.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12kubernetesbefore 1.17.4-11.17.4-1
Red Hat:openshift:3.11::el7atomic-openshiftbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-clientsbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-clients-redistributablebefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-docker-excluderbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-excluderbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-hyperkubebefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-hypershiftbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-masterbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-nodebefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-podbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-sdn-ovsbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-template-service-brokerbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7
Red Hat:openshift:3.11::el7atomic-openshift-testsbefore 0:3.11.346-1.git.0.ea10721.el70:3.11.346-1.git.0.ea10721.el7

Same product

kubernetes: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-1002105In 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
    65This week
  • CVE-2019-11248Kubernetes kubelet exposes /debug/pprof info on healthz port
    55Plan
  • CVE-2017-1002101In 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
    42Plan
  • CVE-2018-1002101In 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 Wi
    40Plan
  • CVE-2017-1000056Kubernetes version 1.5.0-1.5.4 is vulnerable to a privilege escalation in the PodSecurityPolicy admission plugin resulting in the ability to
    40Plan
  • CVE-2016-1906Openshift allows remote attackers to gain privileges by updating a build configuration that was created with an allowed type to a type that
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:kubernetes1.17.4-1 · Debian:12Package registry (OSV)
red hat:atomic-openshift0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-clients0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-clients-redistributable0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-docker-excluder0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-excluder0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-hyperkube0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-hypershift0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-master0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-node0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-pod0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-sdn-ovs0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)
red hat:atomic-openshift-template-service-broker0:3.11.346-1.git.0.ea10721.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
High
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records