This indicates an attack attempt against a Denial Of Services Vulnerability in OpenSSL.
The vulnerability is caused by an error when the vulnerable application handles a maliciously crafted SSL/TLS record. A remote attacker may be able to exploit this to cause a denial of service condition on affected systems.
OpenSSL 1.0.2h and earlier
Denial of Service: Remote attackers can crash vulnerable systems.
Apply the most recent upgrade or patch from the vendor.