Juniper Junos proxy-arp/arp-resp DoS (JSA10576)

This script is Copyright (C) 2013-2017 Tenable Network Security, Inc.


Synopsis :

The remote device is missing a vendor-supplied security patch.

Description :

According to its self-reported version number, the remote Junos device
has a denial of service vulnerability. Specially crafted ARP requests
can result in a crash when a 'family inet' interface is configured as
follows :

- Uses a VLAN interface with an unnumbered address
based on lo0

- lo0 is configured with a non-/32 address

- Both 'proxy-arp unrestricted' and 'arp-resp unrestricted'
are enabled

See also :

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10576

Solution :

Apply the relevant Junos upgrade referenced in Juniper advisory
JSA10576.

Risk factor :

Medium / CVSS Base Score : 5.7
(CVSS2#AV:A/AC:M/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 4.2
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Junos Local Security Checks

Nessus Plugin ID: 68909 ()

Bugtraq ID: 61126

CVE ID: CVE-2013-4686

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