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MitreCVE-2021-42146

HistoryJan 24, 2024 - 7:15 p.m.

CVE-2021-42146

2024-01-2419:15:08

CWE-755

mitre

web.nvd.nist.gov

contiki-ng

tinydtls

cve-2021-42146

security vulnerability

remote attackers

sensitive data

nvd

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7.4

Confidence

High

EPSS

0.001

Percentile

42.3%

JSON

An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients).

Affected configurations

Nvd

Node

contiki-ngtinydtlsMatch2018-08-30

VendorProductVersionCPE
contiki-ngtinydtls2018-08-30cpe:2.3:a:contiki-ng:tinydtls:2018-08-30:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
contiki-ng	tinydtls	2018-08-30	cpe:2.3:a:contiki-ng:tinydtls:2018-08-30:::::::*

References

seclists.org/fulldisclosure/2024/Jan/19

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7.4

Confidence

High

EPSS

0.001

Percentile

42.3%

JSON

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