SB2022042135 - Improper access control in Siemens SIMATIC STEP 7 (TIA Portal)
Published: April 21, 2022
Security Bulletin ID
SB2022042135
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: CVE-2021-42029)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:H/SI:L/SA:L/E:U/U:Clear
The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the engineering system software. A local administrator can bypass implemented security restrictions and gain elevated privileges on the system.
Remediation
Install update from vendor's website.