CVE-2021-42143

Q: What is the severity of CVE-2021-42143?

CVE-2021-42143 has been categorized as a denial of service vulnerability.

Q: How do I fix CVE-2021-42143?

To fix CVE-2021-42143, you should update to the latest version of Contiki-NG tinyDTLS that resolves the infinite loop issue.

Q: What types of attacks can exploit CVE-2021-42143?

CVE-2021-42143 can be exploited by attackers sending a malformed ClientHello handshake message.

Q: What software is affected by CVE-2021-42143?

CVE-2021-42143 affects Contiki-NG tinyDTLS versions up to and including 2018-08-30.

Q: Is CVE-2021-42143 a local or remote vulnerability?

CVE-2021-42143 is a remote vulnerability, as it can be exploited over the network.

Published Jan 24, 2024

Updated

An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. An infinite loop bug exists during the handling of a ClientHello handshake message. This bug allows remote attackers to cause a denial of service by sending a malformed ClientHello handshake message with an odd length of cipher suites, which triggers an infinite loop (consuming all resources) and a buffer over-read that can disclose sensitive information.

Affected Software

1 affected component

Contiki-NG tinyDTLS<=2018-08-30

Event History

Jan 24, 2024

CVE Published

via MITRE·12:00 AM

Data Sourced

via MITRE·12:00 AM

Description

Data Sourced

via NVD·06:15 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2021-42143?

CVE-2021-42143 has been categorized as a denial of service vulnerability.

How do I fix CVE-2021-42143?

To fix CVE-2021-42143, you should update to the latest version of Contiki-NG tinyDTLS that resolves the infinite loop issue.

What types of attacks can exploit CVE-2021-42143?

CVE-2021-42143 can be exploited by attackers sending a malformed ClientHello handshake message.

What software is affected by CVE-2021-42143?

CVE-2021-42143 affects Contiki-NG tinyDTLS versions up to and including 2018-08-30.

Is CVE-2021-42143 a local or remote vulnerability?

CVE-2021-42143 is a remote vulnerability, as it can be exploited over the network.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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CVE-2021-42143 - SecAlerts