Siemens Improper Restriction of Operations Within the Bounds of a Memory Buffer in Wind River VxWorks (CVE-2019-12260)

critical Tenable OT Security Plugin ID 500292

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). This is an IPNET security vulnerability: TCP Urgent Pointer state confusion caused by a malformed TCP AO option.

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Wind River has produced controls and patches to mitigate the reported vulnerabilities. To obtain patches, email [email protected] and indicate the VxWorks major version for which you need source patches.

For more detailed information on the vulnerabilities and the mitigating controls, please see the Wind River advisory at:
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/

Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:

Rockwell Automation (login required) - https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1088561

Xerox - https://security.business.xerox.com/en-us/news/wind-river-vxworks-ipnet-tcp-ip-stack-vulnerabilities/

Dräger – https://static.draeger.com/security

Schneider Electric – https://www.se.com/ww/en/download/document/SESB-2019-214-01/

Plugin Details

Severity: Critical

ID: 500292

Version: 1.12

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 11/14/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

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

CVSS Score Source: CVE-2019-12260

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:siemens:siprotec_5_cp300_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/9/2019

Vulnerability Publication Date: 8/9/2019

Reference Information

CVE: CVE-2019-12260

CWE: 120

Detections

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