HighCVE-2023-46280

Siemens Security Configuration Tool (SCT): Out-of-bounds Read (CVE-2023-46280)

Published 14.05.2024Sources: Siemens ProductCERT, CVE.org

What is affected, what to do

A vulnerability has been identified in Security Configuration Tool (SCT) (All versions), SIMATIC Automation Tool (All versions < V5.0 SP2), SIMATIC BATCH V9.1 (All versions < V9.1 SP2 Upd5), SIMATIC NET PC Software V16 (All versions < V16 Update 8), SIMATIC NET PC Software V17 (All versions), SIMATIC NET PC Software V18 (All versions < V18 SP1), SIMATIC NET PC Software V19 (All versions < V19 Update 2), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC05), SIMATIC PDM V9.2 (All versions < V9.2 SP2 Upd3), SIMATIC Route Control V9.1 (All versions < V9.1 SP2 Upd3), SIMATIC S7-PCT (All versions < V3.5 SP3 Update 6), SIMATIC STEP 7 V5 (All versions < V5.7 SP3), SIMATIC WinCC OA V3.17 (All versions), SIMATIC WinCC OA V3.18 (All versions < V3.18 P025), SIMATIC WinCC OA V3.19 (All versions < V3.19 P010), SIMATIC WinCC Runtime Advanced (All versions < V17 Update 8), SIMATIC WinCC Runtime Professional V16 (All versions < V16 Update 6), SIMATIC WinCC Runtime Professional V17 (All versions < V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 2), SIMATIC WinCC V7.4 (All versions), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 17), SIMATIC WinCC V8.0 (All versions < V8.0 Update 5), SINAMICS Startdrive (All versions < V19 SP1), SINEC NMS (All versions < V3.0), SINUMERIK ONE virtual (All versions < V6.23), SINUMERIK PLC Programming Tool (All versions < V3.3.12), TIA Portal Cloud Connector (All versions < V2.0), Totally Integrated Automation Portal (TIA Portal) V15.1 (All versions), Totally Integrated Automation Portal (TIA Portal) V16 (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (All versions < V17 Update 8), Totally Integrated Automation Portal (TIA Portal) V18 (All versions < V18 Update 4), Totally Integrated Automation Portal (TIA Portal) V19 (All versions < V19 Update 2), SINEC NMS (All versions < V3.0 SP1). The affected applications contain an out of bounds read vulnerability.

The available sources name no fixed version. Check the vendor guidance in the references below.

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Metrics

8.2

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: Vendor (CNA), CVSS v4

6.5

CVSS v3

Severity Medium on the scale from 0 to 10.

Source: Siemens ProductCERT, CVE.org

0.3 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 18.1

Show all metrics

Severity: High
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 48.78 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: no public PoC known
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 8.2 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 6.5
CVSS v4 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 8.2
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.3 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 18.1; Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 14.05.2024
CISA assessment (SSVC): Exploitation: none known · not automatable · Technical impact: partial; Source: CISA Vulnrichment, as of 29 May 2024
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-125

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

Source: siemens_advisory, NVD (NIST), cvelistv5

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
Siemens	Security Configuration Tool (SCT)	`—`	—
Siemens	SIMATIC Automation Tool	`—`	—
Siemens	SIMATIC BATCH V9.1	`—`	—
Siemens	SIMATIC NET PC Software V16	`—`	—
Siemens	SIMATIC NET PC Software V17	`—`	—
Siemens	SIMATIC NET PC Software V18	`—`	—
Siemens	SIMATIC NET PC Software V19	`—`	—
Siemens	SIMATIC PCS 7 V9.1	`—`	—
Siemens	SIMATIC PDM V9.2	`—`	—
Siemens	SIMATIC Route Control V9.1	`—`	—
Siemens	SIMATIC S7-PCT	`—`	—
Siemens	SIMATIC STEP 7 V5	`—`	—
Siemens	SIMATIC WinCC OA V3.17	`—`	—
Siemens	SIMATIC WinCC OA V3.18	`—`	—
Siemens	SIMATIC WinCC OA V3.19	`—`	—
Siemens	SIMATIC WinCC Runtime Advanced	`—`	—
Siemens	SIMATIC WinCC Runtime Professional V16	`—`	—
Siemens	SIMATIC WinCC Runtime Professional V17	`—`	—
Siemens	SIMATIC WinCC Runtime Professional V18	`—`	—
Siemens	SIMATIC WinCC Runtime Professional V19	`—`	—
Siemens	SIMATIC WinCC V7.4	`—`	—
Siemens	SIMATIC WinCC V7.5	`—`	—
Siemens	SIMATIC WinCC V8.0	`—`	—
Siemens	SINAMICS Startdrive	`—`	—
Siemens	SINEC NMS	`—`	—
Siemens	SINUMERIK ONE virtual	`—`	—
Siemens	SINUMERIK PLC Programming Tool	`—`	—
Siemens	TIA Portal Cloud Connector	`—`	—
Siemens	Totally Integrated Automation Portal (TIA Portal) V15.1	`—`	—
Siemens	Totally Integrated Automation Portal (TIA Portal) V16	`—`	—
Siemens	Totally Integrated Automation Portal (TIA Portal) V17	`—`	—
Siemens	Totally Integrated Automation Portal (TIA Portal) V18	`—`	—
Siemens	Totally Integrated Automation Portal (TIA Portal) V19	`—`	—

Vendors and products

Weakness classes (CWE)

CWE-125Out-of-bounds Read
Base
The product reads data past the end, or before the beginning, of the intended buffer.
Entry at MITRE CWE-125

References & sources

Siemens ProductCERTproductcert/html/ssa-962515.html
Siemens ProductCERTproductcert/html/ssa-784301.html
Siemens ProductCERTproductcert/html/ssa-331112.html

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<a href="https://intel.neosec.eu/en/cve/CVE-2023-46280"><img src="https://intel.neosec.eu/badge/cve/CVE-2023-46280.svg?lang=en" alt="CVE-2023-46280 – NEOSEC Intel" height="20"></a>