Detections
Analytics
Beckhoff TwinCAT Untrusted Pointer Dereference (CVE-2018-7502)
high Tenable OT Security Plugin ID 500341
Synopsis
The remote OT asset is affected by a vulnerability.Description
Kernel drivers in Beckhoff TwinCAT 3.1 Build 4022.4, TwinCAT 2.11 R3 2259, and TwinCAT 3.1 lack proper validation of user-supplied pointer values. An attacker who is able to execute code on the target may be able to exploit this vulnerability to obtain SYSTEM privileges.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.Beckhoff recommends users update to the newest version and recompile Matlab modules after updating.
Please see Beckhoff Security Advisory 2018-001 at the following location for more information:
https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2018-001.pdf
See Also
http://www.nessus.org/u?229fcc10
http://www.securityfocus.com/bid/103487
Plugin Details
Severity: High
ID: 500341
Version: 1.6
Type: remote
Family: Tenable.ot
Published: 2/7/2022
Updated: 9/12/2024
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2018-7502
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.2
Vector: CVSS:3.0/AV:L/AC:L/PR:L/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:/a:beckhoff:twincat:2.11, cpe:/a:beckhoff:twincat_c%2b%2b:3.1, cpe:/a:beckhoff:twincat:3.1.4022
Required KB Items: Tenable.ot/Beckhoff
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/23/2018
Vulnerability Publication Date: 3/23/2018
Exploitable With
Core Impact
Reference Information
CVE: CVE-2018-7502
CWE: 20