CVE-2021-31894
CVSS V2 High 7.2
CVSS V3 High 8.8
Description
A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions < V9.1 SP2), SIMATIC PDM (All versions < V9.2 SP2), SIMATIC STEP 7 V5.X (All versions < V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 SP2 HF1). A directory containing metafiles relevant to devices' configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software.
Overview
- CVE ID
- CVE-2021-31894
- Assigner
- productcert@siemens.com
- Vulnerability Status
- Modified
- Published Version
- 2021-07-13T11:15:09
- Last Modified Date
- 2022-08-10T20:28:00
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:siemens:simatic_pcs_7_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.2 | |
| cpe:2.3:o:siemens:simatic_pcs_7_firmware:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:siemens:simatic_pcs_7:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:siemens:simatic_pdm_firmware:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:siemens:simatic_pdm:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:siemens:simatic_step_7_firmware:*:*:*:*:*:*:*:* | 1 | OR | 5.0 | 5.7 |
| cpe:2.3:h:siemens:simatic_step_7:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:siemens:sinamics_starter_firmware:*:*:*:*:*:*:*:* | 1 | OR | 5.4 | |
| cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:hf1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:hf2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:sp1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:sp1_hf1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:sp2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:siemens:sinamics_starter:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 7.2
- Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.8
- Base Severity
- HIGH
- Exploitability Score
- 2
- Impact Score
- 6
References
| Reference URL | Reference Tags |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf | Patch Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-31894 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31894 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:05:48 | Added to TrackCVE | |||
| 2022-12-05 05:54:48 | 2021-07-13T11:15Z | 2021-07-13T11:15:09 | CVE Published Date | updated |
| 2022-12-05 05:54:48 | 2022-08-10T20:28:00 | CVE Modified Date | updated | |
| 2022-12-05 05:54:48 | Modified | Vulnerability Status | updated |