Juniper ScreenOS 6.3.0r20 SSH ssh-pka SSH Negotiation RCE (JSA10712)

This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.


Synopsis :

The remote host is affected by a remote code execution vulnerability.

Description :

The remote host is running Juniper ScreenOS version 6.3.0r20. It is,
therefore, affected by a remote code execution vulnerability due to
improper handling of specially crafted SSH negotiations when ssh-pka
is configured. An unauthenticated, remote attacker can exploit this to
cause a denial of service condition or the execution of arbitrary
code.

See also :

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10712

Solution :

Upgrade to Juniper ScreenOS 6.3.0r21 or later.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.3
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Firewalls

Nessus Plugin ID: 87539 ()

Bugtraq ID: 79627

CVE ID: CVE-2015-7754

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