CVE-2017-6030

{"containers": {"cna": {"providerMetadata": {"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-06-04T21:40:02.867Z"}, "title": "Schneider Electric Modicon PLCs Predictable Value Range from Previous Values", "datePublic": "2017-06-29T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-343", "description": "CWE-343", "type": "CWE"}]}], "affected": [{"vendor": "Schneider Electric", "product": "Modicon M221", "versions": [{"status": "affected", "version": "0", "lessThan": "1.5.0.0", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Schneider Electric", "product": "Modicon M241", "versions": [{"status": "affected", "version": "0", "lessThan": "4.0.5.11", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Schneider Electric", "product": "Modicon M251", "versions": [{"status": "affected", "version": "0", "lessThan": "4.0.5.11", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A predictable value range from previous values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>A predictable value range from previous values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.</p>"}]}], "references": [{"url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02", "tags": ["x_refsource_MISC"]}, {"url": "http://www.securityfocus.com/bid/97254", "name": "97254", "tags": ["vdb-entry", "x_refsource_BID"]}, {"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2017/icsa-17-089-02.json"}], "solutions": [{"lang": "en", "value": "Schneider Electric has released new firmware versions to address the predictable value range from previous values vulnerability and the use of insufficiently random values vulnerability, which are available through Schneider Electric\u2019s software update tool, SoMachine, Version 4.2, and SoMachineBasic, Version 1.5. Schneider Electric has not released a product to address the insufficiently protected credentials vulnerability; however, Schneider Electric has provided compensating controls to reduce the risk of exploitation.\n\n\n\nSoMachineBasic, Version 1.5, is available at the following location:\n\n\n\nhttp://www.schneider-electric.fr/fr/download/document/SOMBASAP15SOFT/\u00a0\n\n\n\nSchneider Electric has provided the following compensating controls to reduce the risk of exploitation of the insufficiently protected credentials vulnerability:\n\n * Verify that the hardware and software infrastructure that the PLCs are integrated into (along with all organizational measures and rules covering access to the infrastructure) consider the results of the hazard and risk analysis, and are implemented according to best practices and standards such as ISA/IEC 62443.\n * Limit traffic on the local network with managed switches\n * Where possible, avoid using Wi-Fi networks, but when Wi-Fi is essential, use only secure communications (such as WPA2 encryption)\n * Do not grant [network] access to unknown computers\n * When remote access is essential, use secure methods such as Virtual Private Networks (VPNs), and ensure the remote access solution(s), as well as the remote computer(s) are kept up-to-date with the latest security patches.\n\n\n\n\nSchneider Electric has released Security Notifications SEVD-2017-075-01, SEVD-2017-075-02, and SEVD-2017-075-03, which provide additional information about the identified vulnerabilities, mitigations, and compensating controls:\n\n\n\n http://www.schneider-electric.com/en/download/document/SEVD-2017-075-01/ \n\n\n\n http://www.schneider-electric.com/en/download/document/SEVD-2017-075-02/ \n\n\n\n http://www.schneider-electric.com/en/download/document/SEVD-2017-075-03/", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Schneider Electric has released new firmware versions to address the predictable value range from previous values vulnerability and the use of insufficiently random values vulnerability, which are available through Schneider Electric\u2019s software update tool, SoMachine, Version 4.2, and SoMachineBasic, Version 1.5. Schneider Electric has not released a product to address the insufficiently protected credentials vulnerability; however, Schneider Electric has provided compensating controls to reduce the risk of exploitation.</p><p>SoMachineBasic, Version 1.5, is available at the following location:</p><p>http://www.schneider-electric.fr/fr/download/document/SOMBASAP15SOFT/&nbsp;</p><p>Schneider Electric has provided the following compensating controls to reduce the risk of exploitation of the insufficiently protected credentials vulnerability:</p><ul><li>Verify that the hardware and software infrastructure that the PLCs are integrated into (along with all organizational measures and rules covering access to the infrastructure) consider the results of the hazard and risk analysis, and are implemented according to best practices and standards such as ISA/IEC 62443.</li><li>Limit traffic on the local network with managed switches</li><li>Where possible, avoid using Wi-Fi networks, but when Wi-Fi is essential, use only secure communications (such as WPA2 encryption)</li><li>Do not grant [network] access to unknown computers</li><li>When remote access is essential, use secure methods such as Virtual Private Networks (VPNs), and ensure the remote access solution(s), as well as the remote computer(s) are kept up-to-date with the latest security patches.</li></ul><p>Schneider Electric has released Security Notifications SEVD-2017-075-01, SEVD-2017-075-02, and SEVD-2017-075-03, which provide additional information about the identified vulnerabilities, mitigations, and compensating controls:</p><p><a href=\"http://www.schneider-electric.com/en/download/document/SEVD-2017-075-01/\">http://www.schneider-electric.com/en/download/document/SEVD-2017-075-01/</a></p><p><a href=\"http://www.schneider-electric.com/en/download/document/SEVD-2017-075-02/\">http://www.schneider-electric.com/en/download/document/SEVD-2017-075-02/</a></p><p><a href=\"http://www.schneider-electric.com/en/download/document/SEVD-2017-075-03/\">http://www.schneider-electric.com/en/download/document/SEVD-2017-075-03/</a></p>"}]}], "credits": [{"lang": "en", "value": "David Formby and Raheem Beyah of Georgia Tech and Fortiphyd Logic, Inc. reported the identified vulnerabilities.", "type": "finder"}], "source": {"advisory": "ICSA-17-089-02", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "ics-cert@hq.dhs.gov", "ID": "CVE-2017-6030", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Schneider Electric Modicon PLCs", "version": {"version_data": [{"version_value": "Schneider Electric Modicon PLCs"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A Predictable Value Range from Previous Values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. 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Schneider Electric has not released a product to address the insufficiently protected credentials vulnerability; however, Schneider Electric has provided compensating controls to reduce the risk of exploitation.\n\n\n\nSoMachineBasic, Version 1.5, is available at the following location:\n\n\n\nhttp://www.schneider-electric.fr/fr/download/document/SOMBASAP15SOFT/\u00a0\n\n\n\nSchneider Electric has provided the following compensating controls to reduce the risk of exploitation of the insufficiently protected credentials vulnerability:\n\n * Verify that the hardware and software infrastructure that the PLCs are integrated into (along with all organizational measures and rules covering access to the infrastructure) consider the results of the hazard and risk analysis, and are implemented according to best practices and standards such as ISA/IEC 62443.\n * Limit traffic on the local network with managed switches\n * Where possible, avoid using Wi-Fi networks, but when Wi-Fi is essential, use only secure communications (such as WPA2 encryption)\n * Do not grant [network] access to unknown computers\n * When remote access is essential, use secure methods such as Virtual Private Networks (VPNs), and ensure the remote access solution(s), as well as the remote computer(s) are kept up-to-date with the latest security patches.\n\n\n\n\nSchneider Electric has released Security Notifications SEVD-2017-075-01, SEVD-2017-075-02, and SEVD-2017-075-03, which provide additional information about the identified vulnerabilities, mitigations, and compensating controls:\n\n\n\n http://www.schneider-electric.com/en/download/document/SEVD-2017-075-01/ \n\n\n\n http://www.schneider-electric.com/en/download/document/SEVD-2017-075-02/ \n\n\n\n http://www.schneider-electric.com/en/download/document/SEVD-2017-075-03/", "supportingMedia": [{"type": "text/html", "value": "<p>Schneider Electric has released new firmware versions to address the predictable value range from previous values vulnerability and the use of insufficiently random values vulnerability, which are available through Schneider Electric\u2019s software update tool, SoMachine, Version 4.2, and SoMachineBasic, Version 1.5. 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Modicon M221", "vendor": "Schneider Electric", "versions": [{"lessThan": "1.5.0.0", "status": "affected", "version": "0", "versionType": "custom"}]}, {"defaultStatus": "unaffected", "product": "Modicon M241", "vendor": "Schneider Electric", "versions": [{"lessThan": "4.0.5.11", "status": "affected", "version": "0", "versionType": "custom"}]}, {"defaultStatus": "unaffected", "product": "Modicon M251", "vendor": "Schneider Electric", "versions": [{"lessThan": "4.0.5.11", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "ics-cert@hq.dhs.gov"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicon_m241_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "9CA3FF3A-9145-4DAD-BAD6-D55C97E182AA", "versionEndIncluding": "4.0.3.20", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicon_m241:-:*:*:*:*:*:*:*", "matchCriteriaId": "4D8FD9D9-F59F-470E-9F7F-CDDD80B0633C", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicon_m251_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "6FDB0710-FB7F-4346-9EEC-4C75ECEA0A1E", "versionEndIncluding": "4.0.3.20", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicon_m251:-:*:*:*:*:*:*:*", "matchCriteriaId": "B8E03A25-B0B6-4BA2-80BC-52C16A6837E0", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicon_m221_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "68FB877A-87E1-4DE9-B758-8CEA1BE1456F", "versionEndIncluding": "1.1.1.5", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*", "matchCriteriaId": "BB0D83F4-B718-47AB-AFB8-B576CB138AAC", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A predictable value range from previous values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections."}, {"lang": "es", "value": "Un problema de Rango de Valor Predecible de Valores Anteriores fue detectado en PLCs Modicon M221, versiones de firmware anteriores a 1.5.0.0, Modicon M241, versiones de firmware anteriores a la 4.0.5.11, y Modicon M251, versiones de firmware anteriores a la 4.0.5.11 de Schneider Electric. Los productos afectados generan n\u00fameros de secuencia inicial TCP de aleatoriedad insuficientemente que pueden permitir a un atacante predecir los n\u00fameros de los valores anteriores. Esto puede permitir a un atacante suplantar o interrumpir las conexiones TCP."}], "id": "CVE-2017-6030", "lastModified": "2026-06-17T01:21:39.603", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.4, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2017-6030", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-29T13:20:18.684514Z", "version": "2.0.3"}}]}, "published": "2017-06-30T03:29:00.390", "references": [{"source": "ics-cert@hq.dhs.gov", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/97254"}, {"source": "ics-cert@hq.dhs.gov", "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2017/icsa-17-089-02.json"}, {"source": "ics-cert@hq.dhs.gov", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/97254"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02"}], "sourceIdentifier": "ics-cert@hq.dhs.gov", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-343"}], "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-331"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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