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

Critical Nessus Plugin ID 87539


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


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.


Upgrade to Juniper ScreenOS 6.3.0r21 or later.

See Also

Plugin Details

Severity: Critical

ID: 87539

File Name: screenos_JSA10712.nasl

Version: $Revision: 1.6 $

Type: local

Family: Firewalls

Published: 2015/12/21

Modified: 2017/08/18

Dependencies: 74148

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND

Vulnerability Information

CPE: cpe:/o:juniper:screenos

Required KB Items: Host/Juniper/ScreenOS/display_version, Host/Juniper/ScreenOS/version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/12/17

Vulnerability Publication Date: 2015/12/17

Reference Information

CVE: CVE-2015-7754

BID: 79627

OSVDB: 132012, 163583

JSA: JSA10712