CVE-2016-2181 Denial of service in n/a
Remote attackers can cause denial of service in OpenSSL DTLS implementations by spoofing records to trigger false-positive packet drops.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-2181?
CVE-2016-2181 is a high-severity denial of service vulnerability in Openssl Openssl, published on 16 Sep 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c.
Weakness: CWE-189
Which versions are affected by CVE-2016-2181?
It affects 2 products.
Products include Openssl Openssl, Oracle Linux.
How do I fix CVE-2016-2181?
Upgrade to a fixed version.
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-2016-2181 being exploited?
There is no known exploitation of CVE-2016-2181 in the wild and no public exploit code.
Other vulnerabilities in Openssl Openssl
Sources
Also known as ALPINE-CVE-2016-2181, DEBIAN-CVE-2016-2181, GHSA-mpfh-46p6-w5g3, UBUNTU-CVE-2016-2181.