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[email protected]NVD:CVE-2021-37172

HistoryAug 10, 2021 - 11:15 a.m.

CVE-2021-37172

2021-08-1011:15:09

CWE-287

[email protected]

web.nvd.nist.gov

simatic s7-1200

vulnerability

authentication

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

35.2%

JSON

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 configurations

Nvd

Node

siemenscpu_1211cMatch-

siemenscpu_1212cMatch-

siemenscpu_1212fcMatch-

siemenscpu_1214cMatch-

siemenscpu_1214fcMatch-

siemenscpu_1215cMatch-

siemenscpu_1215fcMatch-

siemenscpu_1217cMatch-

AND

siemenssimatic_s7-1200_cpu_firmwareMatch4.5.0

Node

siemenssimatic_step_7_\(tia_portal\)Range≤13.0

VendorProductVersionCPE
siemenscpu_1211c-cpe:2.3:h:siemens:cpu_1211c:-:*:*:*:*:*:*:*
siemenscpu_1212c-cpe:2.3:h:siemens:cpu_1212c:-:*:*:*:*:*:*:*
siemenscpu_1212fc-cpe:2.3:h:siemens:cpu_1212fc:-:*:*:*:*:*:*:*
siemenscpu_1214c-cpe:2.3:h:siemens:cpu_1214c:-:*:*:*:*:*:*:*
siemenscpu_1214fc-cpe:2.3:h:siemens:cpu_1214fc:-:*:*:*:*:*:*:*
siemenscpu_1215c-cpe:2.3:h:siemens:cpu_1215c:-:*:*:*:*:*:*:*
siemenscpu_1215fc-cpe:2.3:h:siemens:cpu_1215fc:-:*:*:*:*:*:*:*
siemenscpu_1217c-cpe:2.3:h:siemens:cpu_1217c:-:*:*:*:*:*:*:*
siemenssimatic_s7-1200_cpu_firmware4.5.0cpe:2.3:o:siemens:simatic_s7-1200_cpu_firmware:4.5.0:*:*:*:*:*:*:*
siemenssimatic_step_7_\(tia_portal\)*cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
siemens	cpu_1211c	-	cpe:2.3:h:siemens:cpu_1211c:-:::::::*
siemens	cpu_1212c	-	cpe:2.3:h:siemens:cpu_1212c:-:::::::*
siemens	cpu_1212fc	-	cpe:2.3:h:siemens:cpu_1212fc:-:::::::*
siemens	cpu_1214c	-	cpe:2.3:h:siemens:cpu_1214c:-:::::::*
siemens	cpu_1214fc	-	cpe:2.3:h:siemens:cpu_1214fc:-:::::::*
siemens	cpu_1215c	-	cpe:2.3:h:siemens:cpu_1215c:-:::::::*
siemens	cpu_1215fc	-	cpe:2.3:h:siemens:cpu_1215fc:-:::::::*
siemens	cpu_1217c	-	cpe:2.3:h:siemens:cpu_1217c:-:::::::*
siemens	simatic_s7-1200_cpu_firmware	4.5.0	cpe:2.3:o:siemens:simatic_s7-1200_cpu_firmware:4.5.0:::::::*
siemens	simatic_step_7_\(tia_portal\)	*	cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\)::::::::

References

cert-portal.siemens.com/productcert/pdf/ssa-830194.pdf

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

35.2%

JSON

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