CVE-2011-3210 Denial of service in n/a
Remote attackers can crash OpenSSL daemons via out-of-order TLS handshake messages, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-3210?
CVE-2011-3210 is a medium-severity denial of service vulnerability in Openssl Openssl, published on 22 Sep 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ephemeral ECDH ciphersuite functionality in OpenSSL 0.9.8 through 0.9.8r and 1.0.x before 1.0.0e does not ensure thread safety during processing of handshake messages from clients, which allows remote attackers to cause a denial of service (daemon crash) via out-of-order messages that violate the TLS protocol.
Weakness: CWE-399
Which versions are affected by CVE-2011-3210?
It affects 1 product.
Products include Openssl Openssl.
How do I fix CVE-2011-3210?
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-2011-3210 being exploited?
There is no known exploitation of CVE-2011-3210 in the wild and no public exploit code.
Other vulnerabilities in Openssl Openssl
Sources
Also known as DEBIAN-CVE-2011-3210, GHSA-q2wp-8mh7-q533.