CVE-2021-42141
Last modified
CVE-2021-42141 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in Contiki-NG tinyDTLS through 2018-08-30. One incorrect handshake could complete with different epoch numbers in the packets Client_Hello, Client_key_exchange, and Change_cipher_spec, which may cause denial of service.. EPSS estimates a 1.18% chance of exploitation in the next 30 days.
Description
An issue was discovered in Contiki-NG tinyDTLS through 2018-08-30. One incorrect handshake could complete with different epoch numbers in the packets Client_Hello, Client_key_exchange, and Change_cipher_spec, which may cause denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Contiki-Ng | Tinydtls | <= 2018-08-30 |
References
- http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
- https://seclists.org/fulldisclosure/2024/Jan/14Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
- https://seclists.org/fulldisclosure/2024/Jan/14Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42141?
How severe is CVE-2021-42141?
How do I fix CVE-2021-42141?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-42135HashiCorp Vault and Vault Enterprise 1.8.x through 1.8.4 may…8.1
- CVE-2021-42136A stored Cross-Site Scripting (XSS) vulnerability in the Mis…9
- CVE-2021-42137An issue was discovered in Zammad before 5.0.1. In some case…5.3
- CVE-2021-42138A user of a machine protected by SafeNet Agent for Windows L…6.5
- CVE-2021-42139Deno Standard Modules before 0.107.0 allows Code Injection v…9.8
- CVE-2021-4214A heap overflow flaw was found in libpngs' pngimage.c progra…5.5
- CVE-2021-42142An issue was discovered in Contiki-NG tinyDTLS through maste…9.8
- CVE-2021-42143An issue was discovered in Contiki-NG tinyDTLS through maste…9.1
- CVE-2021-42144Buffer over-read vulnerability in Contiki-NG tinyDTLS throug…9.8
- CVE-2021-42145An assertion failure discovered in in check_certificate_requ…7.5
- CVE-2021-42146An issue was discovered in Contiki-NG tinyDTLS through maste…7.5
- CVE-2021-42147Buffer over-read vulnerability in the dtls_sha256_update fun…9.1
Are you affected by CVE-2021-42141?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST