CVE-2021-25737

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Source
https://cve.org/CVERecord?id=CVE-2021-25737
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25737.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-25737
Aliases
Downstream
Related
Published
2021-09-06T12:15:07.673Z
Modified
2026-07-09T00:13:01.168309Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.

References

Affected packages

Git / github.com/kubernetes/kubelet

Affected ranges

Type
GIT
Repo
https://github.com/kubernetes/kubelet
Events
Introduced
250a1838aa2c492c9096ff86558515b8639d7e87
Fixed
d0d3bc6b038cb8f886d5cf3c175bffc0cb1dbf00
Introduced
1af8853567a0faecc59fbc4d7d2ddc9359ddde83
Fixed
ea1348bf4a58d089e74ac7def7f855945a2c0bbb
Introduced
30b4cd52c54df86ed93459ba84b3e61877fc28ea
Fixed
cf20a01fcb9ee37249f8c9d3b386cbfdfefe7724
Introduced
2f96697a6b8649844ec80a9bbe6d7cde3b197f5b
Last affected
2f96697a6b8649844ec80a9bbe6d7cde3b197f5b
Database specific 
{
    "extracted_events": [
        {
            "introduced": "1.16.0"
        },
        {
            "fixed": "1.18.19"
        },
        {
            "introduced": "1.19.0"
        },
        {
            "fixed": "1.19.10"
        },
        {
            "introduced": "1.20.0"
        },
        {
            "fixed": "1.20.7"
        },
        {
            "introduced": "1.21.0-NA"
        },
        {
            "last_affected": "1.21.0-NA"
        }
    ],
    "cpe": [
        "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:kubernetes:kubernetes:1.21.0:-:*:*:*:*:*:*"
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ]
}

Affected versions

1.*
1.21.0-NA
kubernetes-1.*
kubernetes-1.21.0
v0.*
v0.21.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25737.json"

Git / github.com/kubernetes/kubernetes

Affected ranges

Type
GIT
Repo
https://github.com/kubernetes/kubernetes
Events
Introduced
2bd9643cee5b3b3a5ecbd3af49d09018f0773c77
Fixed
ac0cc736d0018d817c763083945e4db863168d12
Introduced
e19964183377d0ec2052d1f1fa930c4d7575bd50
Fixed
98d5dc5d36d34a7ee13368a7893dcb400ec4e566
Introduced
af46c47ce925f4c4ad5cc8d1fca46c7b77d13b38
Fixed
132a687512d7fb058d0f5890f07d4121b3f0a2e2
Introduced
cb303e613a121a29364f75cc67d3d580833a7479
Last affected
cb303e613a121a29364f75cc67d3d580833a7479
Database specific 
{
    "extracted_events": [
        {
            "introduced": "1.16.0"
        },
        {
            "fixed": "1.18.19"
        },
        {
            "introduced": "1.19.0"
        },
        {
            "fixed": "1.19.10"
        },
        {
            "introduced": "1.20.0"
        },
        {
            "fixed": "1.20.7"
        },
        {
            "introduced": "1.21.0-NA"
        },
        {
            "last_affected": "1.21.0-NA"
        }
    ],
    "cpe": [
        "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:kubernetes:kubernetes:1.21.0:-:*:*:*:*:*:*"
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ]
}

Affected versions

1.*
1.21.0-NA
v1.*
v1.19.0
v1.19.1
v1.19.1-rc.0
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
v1.20.0
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
v1.20.7-rc.0
v1.21.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25737.json"