ID CVE-2020-6995Type cveReporter cve@mitre.orgModified 2020-03-26T19:40:00
Description
In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, the application utilizes weak password requirements, which may allow an attacker to gain unauthorized access.
{"id": "CVE-2020-6995", "bulletinFamily": "NVD", "title": "CVE-2020-6995", "description": "In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, the application utilizes weak password requirements, which may allow an attacker to gain unauthorized access.", "published": "2020-03-24T20:15:00", "modified": "2020-03-26T19:40:00", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}, "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6995", "reporter": "cve@mitre.org", "references": ["https://www.us-cert.gov/ics/advisories/icsa-20-056-03"], "cvelist": ["CVE-2020-6995"], "type": "cve", "lastseen": "2020-12-09T22:03:17", "edition": 7, "viewCount": 6, "enchantments": {"dependencies": {"references": [{"type": "ics", "idList": ["ICSA-20-056-03"]}], "modified": "2020-12-09T22:03:17", "rev": 2}, "score": {"value": 6.3, "vector": "NONE", "modified": "2020-12-09T22:03:17", "rev": 2}, "vulnersScore": 6.3}, "cpe": ["cpe:/o:moxa:pt-7828-f-24-hv_firmware:3.9", "cpe:/o:moxa:pt-7528-24tx-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-24tx-wv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7828-r-48-hv_firmware:3.9", "cpe:/o:moxa:pt-7528-12mst-12tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-12mst-12tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7828-f-48_firmware:3.9", "cpe:/o:moxa:pt-7828-f-hv-hv_firmware:3.9", "cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7828-f-hv_firmware:3.9", "cpe:/o:moxa:pt-7828-r-hv_firmware:3.9", "cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-24tx-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-24tx-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7828-f-48-48_firmware:3.9", "cpe:/o:moxa:pt-7528-8ssc-16tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-12mst-12tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7828-r-24-24_firmware:3.9", "cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7828-f-24_firmware:3.9", "cpe:/o:moxa:pt-7828-f-24-24_firmware:3.9", "cpe:/o:moxa:pt-7828-r-24_firmware:3.9", "cpe:/o:moxa:pt-7828-r-48_firmware:3.9", "cpe:/o:moxa:pt-7828-f-48-hv_firmware:3.9", "cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7828-r-48-48_firmware:3.9", "cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7828-r-24-hv_firmware:3.9", "cpe:/o:moxa:pt-7528-12mst-12tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-8ssc-16tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-wv-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-wv_firmware:4.0", "cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7828-r-hv-hv_firmware:3.9", "cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-hv-hv_firmware:4.0", "cpe:/o:moxa:pt-7528-24tx-wv-wv_firmware:4.0"], "affectedSoftware": [{"cpeName": "moxa:pt-7528-12msc-12tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-12msc-12tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-20msc-4tx-4gsfp-hv_firmware", "name": "moxa pt-7528-20msc-4tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-16msc-8tx-4gsfp-hv_firmware", "name": "moxa pt-7528-16msc-8tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-f-48-48_firmware", "name": "moxa pt-7828-f-48-48 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-8msc-16tx-4gsfp-hv_firmware", "name": "moxa pt-7528-8msc-16tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-16mst-8tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-16mst-8tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-12msc-12tx-4gsfp-hv_firmware", "name": "moxa pt-7528-12msc-12tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8ssc-16tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-8ssc-16tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-r-48-48_firmware", "name": "moxa pt-7828-r-48-48 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7828-r-hv_firmware", "name": "moxa pt-7828-r-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-20mst-4tx-4gsfp-wv_firmware", "name": "moxa pt-7528-20mst-4tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8mst-16tx-4gsfp-hv_firmware", "name": "moxa pt-7528-8mst-16tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-f-hv_firmware", "name": "moxa pt-7828-f-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-12msc-12tx-4gsfp-wv_firmware", "name": "moxa pt-7528-12msc-12tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-16mst-8tx-4gsfp-hv_firmware", "name": "moxa pt-7528-16mst-8tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8mst-16tx-4gsfp-wv_firmware", "name": "moxa pt-7528-8mst-16tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8ssc-16tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-8ssc-16tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-f-24-24_firmware", "name": "moxa pt-7828-f-24-24 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7828-r-48_firmware", "name": "moxa pt-7828-r-48 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-16msc-8tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-16msc-8tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-12mst-12tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-12mst-12tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-16msc-8tx-4gsfp-wv_firmware", "name": "moxa pt-7528-16msc-8tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-20msc-4tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-20msc-4tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-20msc-4tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-20msc-4tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-16mst-8tx-4gsfp-wv_firmware", "name": "moxa pt-7528-16mst-8tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8msc-16tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-8msc-16tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-f-48_firmware", "name": "moxa pt-7828-f-48 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-24tx-hv_firmware", "name": "moxa pt-7528-24tx-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-f-48-hv_firmware", "name": "moxa pt-7828-f-48-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7828-r-48-hv_firmware", "name": "moxa pt-7828-r-48-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-24tx-hv-hv_firmware", "name": "moxa pt-7528-24tx-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8mst-16tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-8mst-16tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8msc-16tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-8msc-16tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-r-hv-hv_firmware", "name": "moxa pt-7828-r-hv-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-16mst-8tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-16mst-8tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-f-hv-hv_firmware", "name": "moxa pt-7828-f-hv-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-20mst-4tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-20mst-4tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-24tx-wv-wv_firmware", "name": "moxa pt-7528-24tx-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-r-24_firmware", "name": "moxa pt-7828-r-24 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-12msc-12tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-12msc-12tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-12mst-12tx-4gsfp-hv_firmware", "name": "moxa pt-7528-12mst-12tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7828-r-24-24_firmware", "name": "moxa pt-7828-r-24-24 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7828-f-24-hv_firmware", "name": "moxa pt-7828-f-24-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7828-f-24_firmware", "name": "moxa pt-7828-f-24 firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7828-r-24-hv_firmware", "name": "moxa pt-7828-r-24-hv firmware", "operator": "le", "version": "3.9"}, {"cpeName": "moxa:pt-7528-8mst-16tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-8mst-16tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-8msc-16tx-4gsfp-wv_firmware", "name": "moxa pt-7528-8msc-16tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-12mst-12tx-4gsfp-wv_firmware", "name": "moxa pt-7528-12mst-12tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-24tx-wv_firmware", "name": "moxa pt-7528-24tx-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-24tx-wv-hv_firmware", "name": "moxa pt-7528-24tx-wv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-20msc-4tx-4gsfp-wv_firmware", "name": "moxa pt-7528-20msc-4tx-4gsfp-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-12mst-12tx-4gsfp-hv-hv_firmware", "name": "moxa pt-7528-12mst-12tx-4gsfp-hv-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-20mst-4tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-20mst-4tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-20mst-4tx-4gsfp-hv_firmware", "name": "moxa pt-7528-20mst-4tx-4gsfp-hv firmware", "operator": "le", "version": "4.0"}, {"cpeName": "moxa:pt-7528-16msc-8tx-4gsfp-wv-wv_firmware", "name": "moxa pt-7528-16msc-8tx-4gsfp-wv-wv firmware", "operator": "le", "version": "4.0"}], "cvss2": {"acInsufInfo": false, "cvssV2": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "HIGH", "userInteractionRequired": false}, "cvss3": {"cvssV3": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9}, "cpe23": ["cpe:2.3:o:moxa:pt-7528-24tx-hv-hv_firmware:4.0:*:*:*:*:*:*:*", "cpe:2.3:o:moxa:pt-7828-f-24-hv_firmware:3.9:*:*:*:*:*:*:*", "cpe:2.3:o:moxa:pt-7528-8mst-16tx-4gsfp-wv-wv_firmware:4.0:*:*:*:*:*:*:*", "cpe:2.3:o:moxa:pt-7828-r-hv-hv_firmware:3.9:*:*:*:*:*:*:*", "cpe:2.3:o:moxa:pt-7528-20mst-4tx-4gsfp-hv_firmware:4.0:*:*:*:*:*:*:*", "cpe:2.3:o:moxa:pt-7828-f-48-48_firmware:3.9:*:*:*:*:*:*:*", "cpe:2.3:o:moxa:pt-7828-f-48-hv_firmware:3.9:*:*:*:*:*:*:*", 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{"ics": [{"lastseen": "2020-12-18T03:22:34", "bulletinFamily": "info", "cvelist": ["CVE-2020-6995", "CVE-2020-6993", "CVE-2020-6985", "CVE-2020-6983", "CVE-2020-6987", "CVE-2020-6989"], "description": "## 1\\. EXECUTIVE SUMMARY\n\n * **CVSS v3 10.0**\n * **ATTENTION:** Exploitable remotely/low skill level to exploit\n * **Vendor:** Moxa\n * **Equipment: **PT-7528 Series and PT-7828 Series\n * **Vulnerabilities:** Stack-based Buffer Overflow, Use of a Broken or Risky Cryptographic Algorithm, Use of Hard-coded Cryptographic Key, Use of Hard-coded Credentials, Weak Password Requirements, Information Exposure\n\n## 2\\. RISK EVALUATION\n\nSuccessful exploitation of these vulnerabilities could crash the device or allow access to sensitive information.\n\n## 3\\. TECHNICAL DETAILS\n\n### 3.1 AFFECTED PRODUCTS\n\nMoxa reports these vulnerabilities affect the following Ethernet switches:\n\n * PT-7528 series firmware, Version 4.0 or lower\n * PT-7828 series firmware, Version 3.9 or lower\n\n### 3.2 VULNERABILITY OVERVIEW\n\n### 3.3 BACKGROUND\n\n#### 3.2.1 [STACK-BASED BUFFER OVERFLOW CWE-121](<https://cwe.mitre.org/data/definitions/121.html>)\n\nA buffer overflow in the web server allows remote attackers to cause a denial-of-service condition or execute arbitrary code.\n\n[CVE-2020-6989](<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6989>) has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is ([AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H](<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H>) ).\n\n#### 3.2.2 [USE OF A BROKEN OR RISKY CRYPTOGRAPHIC ALGORITHM CWE-327](<https://cwe.mitre.org/data/definitions/327.html>)\n\nThe affected products use a weak cryptographic algorithm, which may allow confidential information to be disclosed.\n\n[CVE-2020-6987](<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6987>) has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is ([AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N](<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N>)).\n\n#### 3.2.3 [USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321](<https://cwe.mitre.org/data/definitions/321.html>)\n\nThe affected products use a hard-coded cryptographic key, which increases the possibility that confidential data can be recovered.\n\n[CVE-2020-6983](<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6983>) has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ([AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H](<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H>)).\n\n#### 3.2.4 [USE OF HARD-CODED CREDENTIALS CWE-798](<https://cwe.mitre.org/data/definitions/798.html>)\n\nThese devices use a hard-coded service code for access to the console.\n\n[CVE-2020-6985](<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6985>) has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ([AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H](<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H>)).\n\n#### 3.2.5 [WEAK PASSWORD REQUIREMENTS CWE-521](<https://cwe.mitre.org/data/definitions/521.html>)\n\nThe application utilizes weak password requirements, which may allow an attacker to gain unauthorized access.\n\n[CVE-2020-6995](<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6995>) has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ([AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H](<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H>)).\n\n#### 3.2.6 [INFORMATION EXPOSURE CWE-200](<https://cwe.mitre.org/data/definitions/200.html>)\n\nAn attacker can access to sensitive information from the web service without authorization.\n\n[CVE-2020-6993](<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6993>) has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is ([AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N](<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N>)).\n\n### 3.3 BACKGROUND\n\n * **CRITICAL INFRASTRUCTURE SECTORS: **Critical Manufacturing, Energy, Water and Wastewater Systems\n * **COUNTRIES/AREAS DEPLOYED: **Worldwide\n * **COMPANY HEADQUARTERS LOCATION: **Taiwan\n\n### 3.4 RESEARCHER\n\nIlya Karpov and Evgeniy Druzhinin from Rostelecom-Solar and Georgy Zaytsev of Positive Technologies reported these vulnerabilities to Moxa.\n\n## 4\\. MITIGATIONS\n\nMoxa has developed a solution to address these vulnerabilities: Please contact [Moxa Technical Support](<https://www.moxa.com/support/support/technical-support>) for a security patch.\n\nMoxa also recommends that users apply the security patch and enable \u201cAccount Login Failure Lockout\u201d functions to eliminate any potential risk.\n\nPlease see [Moxa\u2019s security advisory](<https://www.moxa.com/en/support/support/security-advisory/pt-7528-7828-ethernet-switches-vulnerabilities>) for more information.\n\nCISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:\n\n * Minimize network exposure for all control system devices and/or systems, and ensure that they are [not accessible from the Internet](<https://www.us-cert.gov/ics/alerts/ICS-ALERT-10-301-01>).\n * Locate control system networks and remote devices behind firewalls, and isolate them from the business network.\n * When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices.\n\nCISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. \n \nCISA also provides a section for [control systems security recommended practices](<https://www.us-cert.gov/ics/recommended-practices>) on the ICS webpage on [us-cert.gov](<https://www.us-cert.gov/ics>). Several recommended practices are available for reading and download, including [Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies](<https://www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf>).\n\nAdditional mitigation guidance and recommended practices are publicly available on the [ICS webpage on us-cert.gov](<https://www.us-cert.gov/ics>) in the Technical Information Paper, [ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies](<https://www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B>). \n \nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.\n\nCISA also recommends users take the following measures to protect themselves from social engineering attacks: \n\n * Do not click web links or open unsolicited attachments in email messages. \n * Refer to [Recognizing and Avoiding Email Scams](<https://www.us-cert.gov/sites/default/files/publications/emailscams_0905.pdf>) for more information on avoiding email scams. \n * Refer to [Avoiding Social Engineering and Phishing Attacks](<https://www.us-cert.gov/ncas/tips/ST04-014>) for more information on social engineering attacks.\n\nNo known public exploits specifically target these vulnerabilities.\n\n## \nContact Information\n\nFor any questions related to this report, please contact the CISA at: \n \nEmail: [CISAservicedesk@cisa.dhs.gov](<mailto:cisaservicedesk@cisa.dhs.gov>) \nToll Free: 1-888-282-0870\n\nFor industrial control systems cybersecurity information: https://us-cert.cisa.gov/ics \nor incident reporting: https://us-cert.cisa.gov/report\n\nCISA continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product.\n\nThis product is provided subject to this Notification and this [Privacy & Use](<https://www.dhs.gov/privacy-policy>) policy.\n\n**Please share your thoughts.**\n\nWe recently updated our anonymous [product survey](<https://surveymonkey.com/r/G8STDRY?product=https://us-cert.cisa.gov/ics/advisories/icsa-20-056-03>); we'd welcome your feedback.\n", "edition": 7, "modified": "2020-02-25T00:00:00", "published": "2020-02-25T00:00:00", "id": "ICSA-20-056-03", "href": "https://www.us-cert.gov//ics/advisories/icsa-20-056-03", "title": "Moxa PT-7528 and PT-7828 Series Ethernet Switches", "type": "ics", "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}}]}
