CVE-2022-2837

coreDNS: DNS Redirection of Top-Level Domains

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Published Mar 3, 2023 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Description

A flaw was found in coreDNS. This flaw allows a malicious user to redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

coreDNS

affected

Version	Status	Constraints
`unknown`	affected	—

Configuration 1 [-]

cpe:2.3:a:coredns.io:coredns:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2023-1027	A flaw was found in coreDNS. This flaw allows a malicious user to redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.
Github GHSA	GHSA-h828-v5pv-33qx	coreDNS vulnerable to Improper Restriction of Communication Channel to Intended Endpoints

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.388% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://bugzilla.redhat.com/show_bug.cgi?id=2118543
https://nvd.nist.gov/vuln/detail/CVE-2022-2837
https://www.cve.org/CVERecord?id=CVE-2022-2837

History

Mar 7, 2025 7:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Coredns.io Coredns

Weaknesses

Sources

CVE record Updated: Mar 7, 2025, 6:43 PM

Status: PUBLISHED
Assigner: redhat
Published: Mar 3, 2023, 12:00 AM
Updated: Mar 7, 2025, 6:43 PM
Reserved: Aug 16, 2022, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 3, 2024, 12:52 AM

Updated: Aug 3, 2024, 12:52 AM

NVD Updated: Jun 17, 2026, 4:42 AM

Status: Modified
Published: Mar 3, 2023, 4:15 PM
Modified: Jun 17, 2026, 4:42 AM

View source JSON

Red Hat Updated: Aug 16, 2022, 12:00 AM

Severity: Moderate
Public date: Aug 16, 2022, 12:00 AM

View source Bugzilla JSON

OpenCVE enrichment No data

No data.

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