CVE-2019-13939 Information

Description

A vulnerability has been identified in Nucleus NET (All versions) Nucleus RTOS (All versions) Nucleus ReadyStart for ARM MIPS and PPC (All versions V2017.02.2 with patch \Nucleus 2017.02.02 Nucleus NET Patch) Nucleus SafetyCert (All versions) Nucleus Source Code (All versions) VSTAR (All versions). By sending specially crafted DHCP packets to a device an attacker may be able to affect availability and integrity of the device. Adjacent network access but no authentication and no user interaction is needed to conduct this attack. At the time of advisory publication no public exploitation of this security vulnerability was known.

CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-162506.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-434032.pdf https://www.us-cert.gov/ics/advisories/icsa-20-105-06

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

HIGH

Base Severity

7.1