SIMATIC PCS 7 V8.2: Initialization of a Resource with an Insecure Default
CVE-2022-24287 is a high-severity initialization of a resource with an insecure default vulnerability in SIMATIC PCS 7 V8.2 from Siemens, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected SIMATIC PCS 7 V8.2 versions: All versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.24% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of SIMATIC PCS 7 V8.2 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on cert-portal.siemens.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Siemens | SIMATIC PCS 7 V8.2 | All versions | Not stated |
| Siemens | SIMATIC PCS 7 V9.0 | All versions < V9.0 SP3 UC06 | Not stated |
| Siemens | SIMATIC PCS 7 V9.1 | All versions < V9.1 SP1 UC01 | Not stated |
| Siemens | SIMATIC WinCC Runtime Professional V16 and earlier | All versions | Not stated |
| Siemens | SIMATIC WinCC Runtime Professional V17 | All versions < V17 Upd4 | Not stated |
| Siemens | SIMATIC WinCC V7.3 | All versions | Not stated |
| Siemens | SIMATIC WinCC V7.4 | All versions < V7.4 SP1 Update 21 | Not stated |
| Siemens | SIMATIC WinCC V7.5 | All versions < V7.5 SP2 Update 8 | Not stated |
| Siemens | Simatic Pcs 7 | 9.0 and earlier; 9.1 | Not stated |
| Siemens | Simatic Wincc | 7.4 and earlier; 7.5 | Not stated |
| Siemens | Simatic Wincc Runtime Professional | 16 and earlier; 17 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA (siemens.com) |
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 2.0 | 4.6 | Medium | NVD |
Official description
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC06), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1 UC01), SIMATIC WinCC Runtime Professional V16 and earlier (All versions), SIMATIC WinCC Runtime Professional V17 (All versions < V17 Upd4), SIMATIC WinCC V7.3 (All versions), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 21), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 8). A missing printer configuration on the host could allow an authenticated attacker to escape the WinCC Kiosk Mode.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Initialization of a Resource with an Insecure Default
The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.
More Initialization of a Resource with an Insecure Default vulnerabilities (CWE-1188)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in SIMATIC PCS 7 V8.2
- 8.8 High severity
Recent Initialization of a Resource with an Insecure Default vulnerabilities
- 9.8 Critical severity
- 7.5 High severity
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