HighCVE-2018-4832

    Siemens SIMATIC NET PC Software V14: Improper Input Validation (CVE-2018-4832)

    Published Sources: CVE.org

    What is affected, what to do

    A vulnerability has been identified in OpenPCS 7 V7.1 and earlier (All versions), OpenPCS 7 V8.0 (All versions), OpenPCS 7 V8.1 (All versions < V8.1 Upd5), OpenPCS 7 V8.2 (All versions), OpenPCS 7 V9.0 (All versions < V9.0 Upd1), SIMATIC BATCH V7.1 and earlier (All versions), SIMATIC BATCH V8.0 (All versions < V8.0 SP1 Upd21), SIMATIC BATCH V8.1 (All versions < V8.1 SP1 Upd16), SIMATIC BATCH V8.2 (All versions < V8.2 Upd10), SIMATIC BATCH V9.0 (All versions < V9.0 SP1), SIMATIC NET PC Software V14 (All versions < V14 SP1 Update 14), SIMATIC NET PC Software V15 (All versions < 15 SP1), SIMATIC PCS 7 V7.1 and earlier (All versions), SIMATIC PCS 7 V8.0 (All versions), SIMATIC PCS 7 V8.1 (All versions), SIMATIC PCS 7 V8.2 (All versions < V8.2 SP1), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP1), SIMATIC Route Control V7.1 and earlier (All versions), SIMATIC Route Control V8.0 (All versions), SIMATIC Route Control V8.1 (All versions), SIMATIC Route Control V8.2 (All versions), SIMATIC Route Control V9.0 (All versions < V9.0 Upd1), SIMATIC WinCC Runtime Professional V13 (All versions < V13 SP2 Upd2), SIMATIC WinCC Runtime Professional V14 (All versions < V14 SP1 Upd5), SIMATIC WinCC V7.2 and earlier (All versions < WinCC 7.2 Upd 15), SIMATIC WinCC V7.3 (All versions < WinCC 7.3 Upd 16), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Upd 4), SPPA-T3000 Application Server (All versions < Service Pack R8.2 SP2). Specially crafted messages sent to the RPC service of the affected products could cause a Denial-of-Service condition on the remote and local communication functionality of the affected products.

    An exploit is publicly available. Update simatic_net_pc to version 15, simatic_net_pc_software to version 14.0, simatic_wincc to version 7.2.

    Affected
    • Siemens OpenPCS 7 V7.1 and earlier eq All versions..All versions
    • Siemens OpenPCS 7 V8.0 eq All versions..All versions
    • Siemens OpenPCS 7 V8.1 eq All versions < V8.1 Upd5..All versions < V8.1 Upd5
    • Siemens OpenPCS 7 V8.2 eq All versions..All versions
    • Siemens OpenPCS 7 V9.0 eq All versions < V9.0 Upd1..All versions < V9.0 Upd1
    • Siemens SIMATIC BATCH V7.1 and earlier eq All versions..All versions
    • Siemens SIMATIC BATCH V8.0 eq All versions < V8.0 SP1 Upd21..All versions < V8.0 SP1 Upd21
    • Siemens SIMATIC BATCH V8.1 eq All versions < V8.1 SP1 Upd16..All versions < V8.1 SP1 Upd16
    • Siemens SIMATIC BATCH V8.2 eq All versions < V8.2 Upd10..All versions < V8.2 Upd10
    • Siemens SIMATIC BATCH V9.0 eq All versions < V9.0 SP1..All versions < V9.0 SP1
    • Siemens SIMATIC NET PC Software V14 eq All versions < V14 SP1 Update 14..All versions < V14 SP1 Update 14
    • Siemens SIMATIC NET PC Software V15 eq All versions < 15 SP1..All versions < 15 SP1
    • Siemens SIMATIC PCS 7 V7.1 and earlier eq All versions..All versions
    • Siemens SIMATIC PCS 7 V8.0 eq All versions..All versions
    • Siemens SIMATIC PCS 7 V8.1 eq All versions..All versions
    • Siemens SIMATIC PCS 7 V8.2 eq All versions < V8.2 SP1..All versions < V8.2 SP1
    • Siemens SIMATIC PCS 7 V9.0 eq All versions < V9.0 SP1..All versions < V9.0 SP1
    • Siemens SIMATIC Route Control V7.1 and earlier eq All versions..All versions
    • Siemens SIMATIC Route Control V8.0 eq All versions..All versions
    • Siemens SIMATIC Route Control V8.1 eq All versions..All versions
    • Siemens SIMATIC Route Control V8.2 eq All versions..All versions
    • Siemens SIMATIC Route Control V9.0 eq All versions < V9.0 Upd1..All versions < V9.0 Upd1
    • Siemens SIMATIC WinCC Runtime Professional V13 eq All versions < V13 SP2 Upd2..All versions < V13 SP2 Upd2
    • Siemens SIMATIC WinCC Runtime Professional V14 eq All versions < V14 SP1 Upd5..All versions < V14 SP1 Upd5
    • Siemens SIMATIC WinCC V7.2 and earlier eq All versions < WinCC 7.2 Upd 15..All versions < WinCC 7.2 Upd 15
    • Siemens SIMATIC WinCC V7.3 eq All versions < WinCC 7.3 Upd 16..All versions < WinCC 7.3 Upd 16
    • Siemens SIMATIC WinCC V7.4 eq All versions < V7.4 SP1 Upd 4..All versions < V7.4 SP1 Upd 4
    • Siemens SPPA-T3000 Application Server eq All versions < Service Pack R8.2 SP2..All versions < Service Pack R8.2 SP2

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    7.5

    Priority

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

    Source: NVD, CVSS v3

    7.5

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org

    2.4 %

    EPSS score

    Moderate — model estimates 1-10% exploitation likelihood.

    Source: FIRST EPSS, percentile 84.1

    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
    94.12 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
    PoC (publicly reported)
    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
    7.5 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
    7.5
    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
    2.4 %
    Moderate — model estimates 1-10% 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
    84.1
    Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
    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
    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-20

    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

    A vulnerability has been identified in OpenPCS 7 V7.1 and earlier (All versions), OpenPCS 7 V8.0 (All versions), OpenPCS 7 V8.1 (All versions < V8.1 Upd5), OpenPCS 7 V8.2 (All versions), OpenPCS 7 V9.0 (All versions < V9.0 Upd1), SIMATIC BATCH V7.1 and earlier (All versions), SIMATIC BATCH V8.0 (All versions < V8.0 SP1 Upd21), SIMATIC BATCH V8.1 (All versions < V8.1 SP1 Upd16), SIMATIC BATCH V8.2 (All versions < V8.2 Upd10), SIMATIC BATCH V9.0 (All versions < V9.0 SP1), SIMATIC NET PC Software V14 (All versions < V14 SP1 Update 14), SIMATIC NET PC Software V15 (All versions < 15 SP1), SIMATIC PCS 7 V7.1 and earlier (All versions), SIMATIC PCS 7 V8.0 (All versions), SIMATIC PCS 7 V8.1 (All versions), SIMATIC PCS 7 V8.2 (All versions < V8.2 SP1), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP1), SIMATIC Route Control V7.1 and earlier (All versions), SIMATIC Route Control V8.0 (All versions), SIMATIC Route Control V8.1 (All versions), SIMATIC Route Control V8.2 (All versions), SIMATIC Route Control V9.0 (All versions < V9.0 Upd1), SIMATIC WinCC Runtime Professional V13 (All versions < V13 SP2 Upd2), SIMATIC WinCC Runtime Professional V14 (All versions < V14 SP1 Upd5), SIMATIC WinCC V7.2 and earlier (All versions < WinCC 7.2 Upd 15), SIMATIC WinCC V7.3 (All versions < WinCC 7.3 Upd 16), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Upd 4), SPPA-T3000 Application Server (All versions < Service Pack R8.2 SP2). Specially crafted messages sent to the RPC service of the affected products could cause a Denial-of-Service condition on the remote and local communication functionality of the affected products. A reboot of the system is required to recover the remote and local communication functionality. Please note that an attacker needs to have network access to the Application Server in order to exploit this vulnerability. At the time of advisory publication no public exploitation of this security vulnerability was known.

    Source: 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 versionsFixed in
    SiemensOpenPCS 7 V7.1 and earlier
    • All versions
    • —
    SiemensOpenPCS 7 V8.0
    • All versions
    • —
    SiemensOpenPCS 7 V8.1
    • All versions < V8.1 Upd5
    • —
    SiemensOpenPCS 7 V8.2
    • All versions
    • —
    SiemensOpenPCS 7 V9.0
    • All versions < V9.0 Upd1
    • —
    SiemensSIMATIC BATCH V7.1 and earlier
    • All versions
    • —
    SiemensSIMATIC BATCH V8.0
    • All versions < V8.0 SP1 Upd21
    • —
    SiemensSIMATIC BATCH V8.1
    • All versions < V8.1 SP1 Upd16
    • —
    SiemensSIMATIC BATCH V8.2
    • All versions < V8.2 Upd10
    • —
    SiemensSIMATIC BATCH V9.0
    • All versions < V9.0 SP1
    • —
    SiemensSIMATIC NET PC Software V14
    • All versions < V14 SP1 Update 14
    • —
    SiemensSIMATIC NET PC Software V15
    • All versions < 15 SP1
    • —
    SiemensSIMATIC PCS 7 V7.1 and earlier
    • All versions
    • —
    SiemensSIMATIC PCS 7 V8.0
    • All versions
    • —
    SiemensSIMATIC PCS 7 V8.1
    • All versions
    • —
    SiemensSIMATIC PCS 7 V8.2
    • All versions < V8.2 SP1
    • —
    SiemensSIMATIC PCS 7 V9.0
    • All versions < V9.0 SP1
    • —
    SiemensSIMATIC Route Control V7.1 and earlier
    • All versions
    • —
    SiemensSIMATIC Route Control V8.0
    • All versions
    • —
    SiemensSIMATIC Route Control V8.1
    • All versions
    • —
    SiemensSIMATIC Route Control V8.2
    • All versions
    • —
    SiemensSIMATIC Route Control V9.0
    • All versions < V9.0 Upd1
    • —
    SiemensSIMATIC WinCC Runtime Professional V13
    • All versions < V13 SP2 Upd2
    • —
    SiemensSIMATIC WinCC Runtime Professional V14
    • All versions < V14 SP1 Upd5
    • —
    SiemensSIMATIC WinCC V7.2 and earlier
    • All versions < WinCC 7.2 Upd 15
    • —
    SiemensSIMATIC WinCC V7.3
    • All versions < WinCC 7.3 Upd 16
    • —
    SiemensSIMATIC WinCC V7.4
    • All versions < V7.4 SP1 Upd 4
    • —
    SiemensSPPA-T3000 Application Server
    • All versions < Service Pack R8.2 SP2
    • —
    siemensopenpcs_7
    • 8.1
    • 9.0
    • ≤ 7.1
    • 8.2
    • 8.0
    • —
    • —
    • —
    • —
    • —
    siemenssimatic_batch
    • 8.1
    • 8.2
    • 8.0
    • 7.1
    • 9.0
    • —
    • —
    • —
    • —
    • —
    siemenssimatic_net_pc
    • 15
    • < 15
    • —
    • 15
    siemenssimatic_net_pc_software
    • < 14.0
    • 14.0
    siemenssimatic_pcs_7
    • 9.0
    • 8.2
    • 8.0
    • ≤ 7.1
    • 8.1
    • —
    • —
    • —
    • —
    • —
    siemenssimatic_route_control
    • ≤ 7.1
    • 8.1
    • —
    • —

    Vendors and products

    Weakness classes (CWE)

    • CWE-20Improper Input Validation

      Class

      The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

      Entry at MITRE CWE-20

    Public exploit references

    Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

    Public exploit references
    Packet StormSiemens Security Advisory SPPA T3000 Code Execution (opens in a new tab)packetstormsecurity.comPoC (publicly reported)reported, not verified—

    References & sources

    • Siemens ProductCERTproductcert/pdf/ssa-451445.pdfx_refsource_MISC, Vendor advisory
    • Siemens ProductCERTproductcert/pdf/ssa-348629.pdfx_refsource_MISC, Mitigation, Vendor advisory
    • packetstormsecurity.comfiles/155665/Siemens-Security-Advisory-SPPA-T3000-Code-Executio…x_refsource_MISC, Third-party advisory, Vulnerability database
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    Badge preview for CVE-2018-4832
    <a href="https://intel.neosec.eu/en/cve/CVE-2018-4832"><img src="https://intel.neosec.eu/badge/cve/CVE-2018-4832.svg?lang=en" alt="CVE-2018-4832 – NEOSEC Intel" height="20"></a>