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Junos jdhcpd DoS Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Junos OS is prone to a denial of service vulnerability in jdhcpd due to crafted DHCPv6 packets.
Insight
Insight
The Junos OS jdhcpd daemon provides advanced DHCP services to subscribers on all major hardware platforms. An issue was discovered that can cause jdhcpd to crash and restart when a crafted DHCPv6 packet is received from a subscriber. Repeated crashes of the jdhcpd process may constitute an extended denial of service condition for subscribers attempting to obtain IPv6 addresses. This issue only affects devices configured for DHCP services via IPv6 with either Server or Relay enabled. IPv4 is not vulnerable to this issue.
Affected Software
Affected Software
Junos OS 11.4, 12.1, 12.3, 13.2, 13.3, 14.1, 14.2 and 15.1.
Detection Method
Detection Method
Checks if a vulnerable OS build is present on the target host.
Solution
Solution
New builds of Junos OS software are available from Juniper.