CVE-2021-42141 Denial of service in n/a
An attacker can cause a denial of service in Contiki-NG tinyDTLS by sending handshake packets with mismatched 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-2021-42141?
CVE-2021-42141 is a high-severity denial of service vulnerability in n/a, published on 22 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 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.
Weakness: CWE-755
Which versions are affected by CVE-2021-42141?
It affects 1 product.
Products include Contiki-Ng Tinydtls.
How do I fix CVE-2021-42141?
No fix has been published for CVE-2021-42141 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-2021-42141 being exploited?
There is no known exploitation of CVE-2021-42141 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-mfm9-9c5w-7f5g.