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CVE-2021-37172

nvd nist
Published: Aug 10, 2021Modified: Nov 21, 2024

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.

Affected (2)

Siemens
2 products
Simatic S7 1200 Cpu Firmware
Simatic Step 7 (tia Portal)
Configuration A
1 vulnerable · 8 platform
Vulnerable SoftwareAffected Versions
Simatic S7 1200 Cpu Firmware
Version 4.5.0
Running on/withPlatform Versions
Siemens
Cpu 1211c
All versions
Siemens
Cpu 1212c
All versions
Siemens
Cpu 1212fc
All versions
Siemens
Cpu 1214c
All versions
Siemens
Cpu 1214fc
All versions
Siemens
Cpu 1215c
All versions
Siemens
Cpu 1215fc
All versions
Siemens
Cpu 1217c
All versions
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Simatic Step 7 (tia Portal)
Up to 13.0

Related CWEs

CWE-287
Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (2)

Source: productcert@siemens.com
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory

Timeline

No history available yet.