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Junos SRX Series: DHCP 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 on SRX series is prone to a denial of service vulnerability in flowd due to crafted DHCP packet.
Insight
Insight
On all vSRX and SRX Series devices, when the DHCP or DHCP relay is configured, specially crafted packet might cause the flowd process to crash, halting or interrupting traffic from flowing through the device(s). Repeated crashes of the flowd process may constitute an extended denial of service condition for the device(s).
Affected Software
Affected Software
Junos OS 12.1X46, 12.3X48 and 15.1X49 on SRX Series.
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.