CVE-2021-37172
CVSS V2 Medium 5
CVSS V3 High 7.5
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.
Overview
- CVE ID
- CVE-2021-37172
- Assigner
- productcert@siemens.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-08-10T11:15:09
- Last Modified Date
- 2022-07-01T17:44:35
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:siemens:simatic_s7-1200_cpu_firmware:4.5.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:siemens:cpu_1211c:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:siemens:cpu_1212c:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:siemens:cpu_1212fc:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:siemens:cpu_1214c:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:siemens:cpu_1214fc:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:siemens:cpu_1215c:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:siemens:cpu_1215fc:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:siemens:cpu_1217c:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):*:*:*:*:*:*:*:* | 1 | OR | 13.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-830194.pdf | Patch Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-37172 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37172 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:05:48 | Added to TrackCVE | |||
| 2022-12-05 07:46:39 | 2021-08-10T11:15Z | 2021-08-10T11:15:09 | CVE Published Date | updated |
| 2022-12-05 07:46:39 | 2022-07-01T17:44:35 | CVE Modified Date | updated | |
| 2022-12-05 07:46:39 | Analyzed | Vulnerability Status | updated |