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MitreCVE-2021-42142

HistoryJan 23, 2024 - 10:15 p.m.

CVE-2021-42142

2024-01-2322:15:16

CWE-755

mitre

web.nvd.nist.gov

cve-2021-42142

contiki-ng

tinydtls

security vulnerability

remote attack

denial of service

false-positive packet drops

nvd

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.9

Confidence

High

EPSS

0.001

Percentile

51.0%

JSON

An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. This vulnerability allows remote attackers to cause a denial of service and false-positive packet drops.

Affected configurations

Nvd

Node

contiki-ngtinydtlsRange≤2018-08-30

VendorProductVersionCPE
contiki-ngtinydtls*cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
contiki-ng	tinydtls	*	cpe:2.3:a:contiki-ng:tinydtls::::::::

References

github.com/contiki-ng/tinydtls/issues/24

seclists.org/fulldisclosure/2024/Jan/15

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.9

Confidence

High

EPSS

0.001

Percentile

51.0%

JSON

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