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

critical Nessus Plugin ID 87539

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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.

Solution

Upgrade to Juniper ScreenOS 6.3.0r21 or later.

Plugin Details

Severity: Critical

ID: 87539

File Name: screenos_JSA10712.nasl

Version: 1.10

Type: local

Family: Firewalls

Published: 12/21/2015

Updated: 2/18/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2015-7754

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: manual

Vulnerability Information

CPE: cpe:/o:juniper:screenos

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/17/2015

Vulnerability Publication Date: 12/17/2015

Reference Information

CVE: CVE-2015-7754

BID: 79627

JSA: JSA10712

Detections

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