{"containers": {"cna": {"affected": [{"product": "Rockwell Automation MicroLogix 1400", "vendor": "n/a", "versions": [{"status": "affected", "version": "MicroLogix 1400, All series Version 21.6 and below"}]}], "descriptions": [{"lang": "en", "value": "Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-120", "description": "CLASSIC BUFFER OVERFLOW CWE-120", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-25T15:59:07", "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01"}, {"tags": ["x_refsource_MISC"], "url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1129877/loc/en_US#__highlight"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "ics-cert@hq.dhs.gov", "ID": "CVE-2021-22659", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Rockwell Automation MicroLogix 1400", "version": {"version_data": [{"version_value": "MicroLogix 1400, All series Version 21.6 and below"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CLASSIC BUFFER OVERFLOW CWE-120"}]}]}, "references": {"reference_data": [{"name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01", "refsource": "MISC", "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01"}, {"name": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1129877/loc/en_US#__highlight", "refsource": "MISC", "url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1129877/loc/en_US#__highlight"}]}}}}, "cveMetadata": {"assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "assignerShortName": "icscert", "cveId": "CVE-2021-22659", "datePublished": "2021-03-25T15:59:07", "dateReserved": "2021-01-05T00:00:00", "dateUpdated": "2021-03-25T15:59:07", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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