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Junos SRX Series: DHCP DoS Vulnerability

Information

Severity

Severity

Medium

Family

Family

JunOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

5 years ago

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.

Common Vulnerabilities and Exposures (CVE)