CVE-2021-42146 Information disclosure in n/a
Remote attackers can reuse DTLS epoch numbers to obtain sensitive application data from connected clients in Contiki-NG.
- 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-2021-42146?
CVE-2021-42146 is a high-severity vulnerability in n/a, published on 24 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 allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients).
Which versions are affected by CVE-2021-42146?
It affects 1 product.
Products include Contiki-Ng Tinydtls.
How do I fix CVE-2021-42146?
No fix has been published for CVE-2021-42146 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-42146 being exploited?
There is no known exploitation of CVE-2021-42146 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-wmpm-9r6p-rpww.