CVE-2021-38111 - Vulnerability Details - OpenCVE

Description

The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.

Published: 2021-08-04

Score: 8.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:defcon:def_con_27_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:defcon:def_con_27:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-24584	The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00393.

Exploitation poc

Automatable no

Technical Impact total

References

Link	Providers
https://defcon.org/html/defcon-29/dc-29-speakers.html#kintigh
https://github.com/skintigh/defcon27_badge_sdr

History

Mon, 05 May 2025 17:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Defcon Def Con 27 Def Con 27 Firmware

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-08-04T00:00:00.000Z

Updated: 2025-05-05T16:46:25.603Z

Reserved: 2021-08-04T00:00:00.000Z

Link: CVE-2021-38111

Vulnrichment

Updated: 2024-08-04T01:30:09.183Z

NVD

Status : Modified

Published: 2021-08-04T18:15:10.093

Modified: 2025-05-05T17:17:26.490

Link: CVE-2021-38111

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-120

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