Detections
Analytics
Siemens SIMATIC S7-1500 TM MFP Linux Kernel Improper Authentication (CVE-2022-2503)
medium Tenable OT Security Plugin ID 503016
Synopsis
The remote OT asset is affected by a vulnerability.Description
Dm-verity is used for extending root-of-trust to root filesystems.LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
Refer to the vendor advisory.See Also
https://cert-portal.siemens.com/productcert/pdf/ssa-794697.pdf
https://support.industry.siemens.com/cs/ww/en/view/109827684/
https://www.cisa.gov/news-events/ics-advisories/icsa-23-166-11
Plugin Details
Severity: Medium
ID: 503016
Version: 1.2
Type: remote
Family: Tenable.ot
Published: 2/25/2025
Updated: 2/26/2025
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.1
Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C
CVSS Score Source: CVE-2022-2503
CVSS v3
Risk Factor: Medium
Base Score: 6.7
Temporal Score: 6
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:siemens:simatic_s7-1500_tm_mfp
Required KB Items: Tenable.ot/Siemens
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 6/13/2023
Vulnerability Publication Date: 6/13/2023
Reference Information
CVE: CVE-2022-2503
CWE: 287
ICSA: 23-166-11