CVE-2019-0031

Name of the Vulnerable Software and Affected Versions Junos OS versions prior to 17.4R2 Junos OS versions prior to 18.1R2

Description The issue is related to the jdhcpd daemon in Junos OS, which can cause a memory resource consumption problem when receiving specific IPv6 DHCP packets. This can lead to a Denial of Service (DoS) condition, impacting both IPv4 and IPv6 requests. Additionally, some clients may not have their IPv6 Identity Association (IA) address and network tables agreed upon by the jdhcpd daemon after a failover event, resulting in denied interfaces and IP addresses.

Recommendations For Junos OS versions prior to 17.4R2, update to version 17.4R2 or later to resolve the issue. For Junos OS versions prior to 18.1R2, update to version 18.1R2 or later to resolve the issue.