CVE-2021-42142 Denial of service in n/a
Remote attackers can cause denial of service and false-positive packet drops in Contiki-NG tinyDTLS by mishandling large epoch numbers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42142?
CVE-2021-42142 is a high-severity denial of service vulnerability in n/a, published on 23 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2021-42142?
It affects 1 product.
Products include Contiki-Ng Tinydtls.
How do I fix CVE-2021-42142?
No fix has been published for CVE-2021-42142 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-42142 being exploited?
There is no known exploitation of CVE-2021-42142 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-q37p-g696-qhwm.