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Vulnerability Details :

CVE-2021-42142

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-23 Jan, 2024 | 00:00
Updated At-11 Jun, 2025 | 17:09
Rejected At-
Credits

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:23 Jan, 2024 | 00:00
Updated At:11 Jun, 2025 | 17:09
Rejected At:
▼CVE Numbering Authority (CNA)

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 Products
Vendor
n/a
Product
n/a
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/contiki-ng/tinydtls/issues/24
N/A
https://seclists.org/fulldisclosure/2024/Jan/15
N/A
Hyperlink: https://github.com/contiki-ng/tinydtls/issues/24
Resource: N/A
Hyperlink: https://seclists.org/fulldisclosure/2024/Jan/15
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
http://seclists.org/fulldisclosure/2024/Jan/15
N/A
https://github.com/contiki-ng/tinydtls/issues/24
x_transferred
https://seclists.org/fulldisclosure/2024/Jan/15
x_transferred
Hyperlink: http://seclists.org/fulldisclosure/2024/Jan/15
Resource: N/A
Hyperlink: https://github.com/contiki-ng/tinydtls/issues/24
Resource:
x_transferred
Hyperlink: https://seclists.org/fulldisclosure/2024/Jan/15
Resource:
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-770CWE-770 Allocation of Resources Without Limits or Throttling
Type: CWE
CWE ID: CWE-770
Description: CWE-770 Allocation of Resources Without Limits or Throttling
Metrics
VersionBase scoreBase severityVector
3.18.2HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Version: 3.1
Base score: 8.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:23 Jan, 2024 | 22:15
Updated At:11 Jun, 2025 | 17:15

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Secondary3.18.2HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 8.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CPE Matches
contiki-ng
contiki-ng
>>tinydtls>>Versions up to 2018-08-30(inclusive)
cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-755Primarynvd@nist.gov
CWE-770Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-755
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-770
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/contiki-ng/tinydtls/issues/24cve@mitre.org
Issue Tracking
Patch
https://seclists.org/fulldisclosure/2024/Jan/15cve@mitre.org
Mailing List
Third Party Advisory
http://seclists.org/fulldisclosure/2024/Jan/15af854a3a-2127-422b-91ae-364da2661108
N/A
https://github.com/contiki-ng/tinydtls/issues/24af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
Patch
https://seclists.org/fulldisclosure/2024/Jan/15af854a3a-2127-422b-91ae-364da2661108
Mailing List
Third Party Advisory
Hyperlink: https://github.com/contiki-ng/tinydtls/issues/24
Source: cve@mitre.org
Resource:
Issue Tracking
Patch
Hyperlink: https://seclists.org/fulldisclosure/2024/Jan/15
Source: cve@mitre.org
Resource:
Mailing List
Third Party Advisory
Hyperlink: http://seclists.org/fulldisclosure/2024/Jan/15
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://github.com/contiki-ng/tinydtls/issues/24
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Issue Tracking
Patch
Hyperlink: https://seclists.org/fulldisclosure/2024/Jan/15
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mailing List
Third Party Advisory

Change History

0
Information is not available yet

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