CVE-2020-8562

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Source
https://cve.org/CVERecord?id=CVE-2020-8562
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8562.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-8562
Aliases
Downstream
Related
Published
2022-02-01T11:15:10.903Z
Modified
2026-04-10T04:28:25.157255Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

As mitigations to a report from 2019 and CVE-2020-8555, Kubernetes attempts to prevent proxied connections from accessing link-local or localhost networks when making user-driven connections to Services, Pods, Nodes, or StorageClass service providers. As part of this mitigation Kubernetes does a DNS name resolution check and validates that response IPs are not in the link-local (169.254.0.0/16) or localhost (127.0.0.0/8) range. Kubernetes then performs a second DNS resolution without validation for the actual connection. If a non-standard DNS server returns different non-cached responses, a user may be able to bypass the proxy IP restriction and access private networks on the control plane.

References

Affected packages

Git / github.com/kubernetes/kubernetes

Affected ranges

Type
GIT
Repo
https://github.com/kubernetes/kubernetes
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
6f6ce59dc8fefde25a3ba0ef0047f4ec6662ef24
Introduced
e19964183377d0ec2052d1f1fa930c4d7575bd50
Last affected
98d5dc5d36d34a7ee13368a7893dcb400ec4e566
Introduced
af46c47ce925f4c4ad5cc8d1fca46c7b77d13b38
Last affected
8a62859e515889f07e3e3be6a1080413f17cf2c3
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
cb303e613a121a29364f75cc67d3d580833a7479
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.18.18"
        },
        {
            "introduced": "1.19.0"
        },
        {
            "last_affected": "1.19.10"
        },
        {
            "introduced": "1.20.0"
        },
        {
            "last_affected": "1.20.6"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.21.0"
        }
    ]
}

Affected versions

v0.*
v0.13.1-dev
v0.17.0
v1.*
v1.1.0-alpha.0
v1.1.0-alpha.1
v1.10.0-alpha.0
v1.10.0-alpha.1
v1.10.0-alpha.2
v1.10.0-alpha.3
v1.11.0-alpha.0
v1.11.0-alpha.1
v1.11.0-alpha.2
v1.12.0-alpha.0
v1.12.0-alpha.1
v1.13.0-alpha.0
v1.13.0-alpha.1
v1.13.0-alpha.2
v1.13.0-alpha.3
v1.14.0-alpha.0
v1.14.0-alpha.1
v1.14.0-alpha.2
v1.14.0-alpha.3
v1.15.0-alpha.0
v1.15.0-alpha.1
v1.15.0-alpha.2
v1.15.0-alpha.3
v1.16.0-alpha.0
v1.16.0-alpha.1
v1.16.0-alpha.2
v1.16.0-alpha.3
v1.17.0-alpha.0
v1.17.0-alpha.1
v1.17.0-alpha.2
v1.17.0-alpha.3
v1.18.0
v1.18.0-alpha.0
v1.18.0-alpha.1
v1.18.0-alpha.2
v1.18.0-alpha.4
v1.18.0-alpha.5
v1.18.0-beta.0
v1.18.0-beta.1
v1.18.0-beta.2
v1.18.0-rc.1
v1.18.1
v1.18.1-beta.0
v1.18.10
v1.18.10-rc.0
v1.18.11-rc.0
v1.18.12
v1.18.12-rc.1
v1.18.13
v1.18.13-rc.0
v1.18.14
v1.18.14-rc.0
v1.18.14-rc.1
v1.18.15
v1.18.15-rc.0
v1.18.16
v1.18.16-rc.0
v1.18.17
v1.18.17-rc.0
v1.18.18
v1.18.18-rc.0
v1.18.2
v1.18.2-beta.0
v1.18.3
v1.18.3-beta.0
v1.18.4
v1.18.4-rc.0
v1.18.5
v1.18.5-rc.0
v1.18.5-rc.1
v1.18.6
v1.18.6-rc.0
v1.18.7-rc.0
v1.18.8
v1.18.8-rc.1
v1.18.9
v1.18.9-rc.0
v1.19.0
v1.19.0-alpha.0
v1.19.0-alpha.1
v1.19.0-alpha.2
v1.19.0-alpha.3
v1.19.0-beta.0
v1.19.0-beta.1
v1.19.0-beta.2
v1.19.1
v1.19.1-rc.0
v1.19.10
v1.19.10-rc.0
v1.19.2
v1.19.2-rc.0
v1.19.3
v1.19.3-rc.0
v1.19.4
v1.19.4-rc.0
v1.19.5
v1.19.5-rc.0
v1.19.6
v1.19.6-rc.0
v1.19.6-rc.1
v1.19.7
v1.19.7-rc.0
v1.19.8
v1.19.8-rc.0
v1.19.9
v1.19.9-rc.0
v1.2.0-alpha.1
v1.2.0-alpha.2
v1.2.0-alpha.3
v1.2.0-alpha.4
v1.2.0-alpha.5
v1.2.0-alpha.6
v1.2.0-alpha.7
v1.2.0-alpha.8
v1.20.0
v1.20.0-alpha.0
v1.20.0-alpha.1
v1.20.0-alpha.2
v1.20.0-alpha.3
v1.20.0-beta.0
v1.20.0-beta.1
v1.20.0-beta.2
v1.20.1
v1.20.1-rc.0
v1.20.1-rc.1
v1.20.2
v1.20.2-rc.0
v1.20.3
v1.20.3-rc.0
v1.20.4
v1.20.4-rc.0
v1.20.5
v1.20.5-rc.0
v1.20.6
v1.20.6-rc.0
v1.21.0
v1.21.0-alpha.0
v1.21.0-alpha.1
v1.21.0-alpha.2
v1.21.0-alpha.3
v1.21.0-beta.0
v1.21.0-beta.1
v1.21.0-rc.0
v1.22.0-alpha.0
v1.3.0-alpha.0
v1.3.0-alpha.1
v1.3.0-alpha.2
v1.3.0-alpha.3
v1.3.0-alpha.4
v1.3.0-alpha.5
v1.4.0-alpha.1
v1.4.0-alpha.2
v1.4.0-alpha.3
v1.5.0-alpha.0
v1.5.0-alpha.1
v1.5.0-alpha.2
v1.6.0-alpha.0
v1.6.0-alpha.1
v1.6.0-alpha.2
v1.6.0-alpha.3
v1.7.0-alpha.0
v1.7.0-alpha.1
v1.7.0-alpha.2
v1.7.0-alpha.3
v1.7.0-alpha.4
v1.8.0-alpha.0
v1.8.0-alpha.1
v1.8.0-alpha.2
v1.8.0-alpha.3
v1.9.0-alpha.0
v1.9.0-alpha.1
v1.9.0-alpha.2
v1.9.0-alpha.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8562.json"