8.1

CVE-2019-11247: Kubernetes kube-apiserver allows access to custom resources via wrong scope

Modified
AliasesRHSA-2019:2504DEBIAN-CVE-2019-11247GHSA-fp37-c92q-4pwq
Published 29-08-2019Last modified 16-09-2024

Vulnerability summary

CVE-2019-11247 is a high (CVSS 8.1) Improper Input Validation vulnerability in kubernetes. EPSS estimates a 2.15% chance of exploitation in the next 30 days, higher than 82.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
2.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3
RHBA-2019:2816RHSA-2019:2690RHSA-2019:2769

Timeline

  1. 29-08-2019
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

The Kubernetes kube-apiserver mistakenly allows access to a cluster-scoped custom resource if the request is made as if the resource were namespaced. Authorizations for the resource accessed in this manner are enforced using roles and role bindings within the namespace, meaning that a user with access only to a resource in one namespace could create, view update or delete the cluster-scoped resource (according to their namespace role privileges). Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.

CVSS metrics

8 scores · 6 sources · 3 versions

EPSS trend

Probability

2.15%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat5 products
  • openshift_container_platform3.9 | 3.10 | 3.11
  • openshift< 0:4.1.10-201908060758.git.0.d81afa6.el7 | < 0:4.1.10-201908060758.git.0.d81afa6.el8
  • openshift-clients< 0:4.1.10-201908060758.git.0.d81afa6.el7 | < 0:4.1.10-201908060758.git.0.d81afa6.el8
  • openshift-clients-redistributable< 0:4.1.10-201908060758.git.0.d81afa6.el7 | < 0:4.1.10-201908060758.git.0.d81afa6.el8
  • openshift-hyperkube< 0:4.1.10-201908060758.git.0.d81afa6.el7 | < 0:4.1.10-201908060758.git.0.d81afa6.el8
Alpine1 product
  • k3s< 0.8.0-r0
Debian1 product
  • kubernetes< 1.17.4-1
K8s.io1 product
  • apiextensions-apiserver≥ 0.7.0, < 0.13.9 | ≥ 0.14.0, < 0.14.5 | ≥ 0.15.0, < 0.15.2
Kubernetes1 product
  • kubernetesprior to 1.13.9 | prior to 1.14.5 | prior to 1.15.2 | 1.7 | 1.8 | 1.9 | 1.10 | 1.11 | 1.12 | ≥ 1.7.0, ≤ 1.12.10 | ≥ 1.13.0, < 1.13.9 | ≥ 1.14.0, < 1.14.5 | ≥ 1.15.0, < 1.15.2 | 1.12.11:beta0

5 vendors · 9 products

References

24 links
Show all 24 references