Detections
Analytics
Siemens SIMATIC S7-1500 TM MFP BIOS Improper Handling of Exceptional Conditions (CVE-2021-28831)
high Tenable OT Security Plugin ID 503000
Synopsis
The remote OT asset is affected by a vulnerability.Description
decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.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-831302.pdf
https://support.industry.siemens.com/cs/ww/en/view/109945851/
https://www.cisa.gov/news-events/ics-advisories/icsa-23-166-10
Plugin Details
Severity: High
ID: 503000
Version: 1.1
Type: remote
Family: Tenable.ot
Published: 2/25/2025
Updated: 2/25/2025
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 Ease: No known exploits are available
Patch Publication Date: 6/13/2023
Vulnerability Publication Date: 6/13/2023
Reference Information
CVE: CVE-2021-28831
CWE: 755
ICSA: 23-166-10