Intrusion Prevention

NLnet.Labs.Unbound.NOTIFY.Queries.DoS

Description

This indicates an attack attempt to exploit a Denial of Service Vulnerability in NLnet Labs Unbound.
A remote, unauthenticated attacker can exploit this vulnerability by sending a crafted NOTIFY request to the target server. Successful exploitation results will cause the server to abnormally terminate.

Affected Products

NLnet Labs Unbound 1.7.1 through 1.9.3

Impact

Denial of Service: Remote attackers can crash vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt

CVE References

CVE-2019-16866