Juniper Junos SRX Series Gateway Chassis Cluster flowd Multicast Session DoS (JSA10768)

This script is Copyright (C) 2017 Tenable Network Security, Inc.

Synopsis :

The remote device is affected by a denial of service vulnerability.

Description :

According to its self-reported version number and configuration, the
remote Juniper Junos SRX series device is affected by a denial of
service vulnerability in the flow daemon (flowd) when handling
multicast session synchronization. An unauthenticated, adjacent
attacker can exploit this issue, by sending specially crafted
multicast packets, to cause the flowd daemon to crash and restart.

Note that this vulnerability only occurs in chassis cluster
configurations that process transit multicast traffic. Transit
multicast traffic is processed on an SRX services gateway by enabling
PIM in normal Flow Mode, or via security policies permitting transit
multicast traffic in L2/Transparent Mode.

Nessus has not tested for this issue but has instead relied only on
the device's self-reported version, model, and current configuration.

See also :

Solution :

Apply the relevant Junos software release or workaround referenced in
Juniper advisory JSA10768.

Risk factor :

Medium / CVSS Base Score : 5.7

Family: Junos Local Security Checks

Nessus Plugin ID: 96658 ()

Bugtraq ID: 95400

CVE ID: CVE-2017-2300

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