cve-2020-36478
Vulnerability from cvelistv5
Published
2021-08-23 00:00
Modified
2024-08-04 17:30
Severity ?
Summary
An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid.
References
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdfPatch, Third Party Advisory
cve@mitre.orghttps://github.com/ARMmbed/mbedtls/issues/3629Exploit, Third Party Advisory
cve@mitre.orghttps://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9Release Notes, Third Party Advisory
cve@mitre.orghttps://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0Release Notes, Third Party Advisory
cve@mitre.orghttps://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18Release Notes, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/11/msg00021.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdfPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARMmbed/mbedtls/issues/3629Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/11/msg00021.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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    "dateReserved": "2021-08-23T00:00:00",
    "dateUpdated": "2024-08-04T17:30:07.313Z",
    "state": "PUBLISHED"
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      "id": "CVE-2020-36478",
      "lastModified": "2024-11-21T05:29:38.247",
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      "published": "2021-08-23T02:15:07.097",
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      "vulnStatus": "Modified",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2020-36478\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-08-23T02:15:07.097\",\"lastModified\":\"2024-11-21T05:29:38.247\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid.\"},{\"lang\":\"es\",\"value\":\"Se ha detectado un problema en Mbed TLS versiones anteriores a 2.25.0 (y versiones anteriores a 2.16.9 LTS y versiones anteriores a 2.7.18 LTS). Una entrada de par\u00e1metros de algoritmo NULL parece id\u00e9ntica a una matriz de REAL (tama\u00f1o cero) y, por tanto, el certificado es considerado v\u00e1lido. Sin embargo, si los par\u00e1metros no coinciden de ninguna manera, el certificado debe considerarse no v\u00e1lido.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-295\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.7.18\",\"matchCriteriaId\":\"D1399656-491A-428C-B290-5303A59B7C0E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.8.0\",\"versionEndExcluding\":\"2.16.9\",\"matchCriteriaId\":\"9DD8F7D9-7E6F-4C31-A38C-D4B246F713FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.17.0\",\"versionEndExcluding\":\"2.25.0\",\"matchCriteriaId\":\"57294BAA-C692-4C66-96E9-7B653E32D88C\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:logo\\\\!_cmr2020_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.2\",\"matchCriteriaId\":\"FE9FB0B2-71ED-4208-B908-1C78CB15E372\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:logo\\\\!_cmr2020:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E8E5F42B-63E3-4B2D-A03F-983F51EE0648\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:logo\\\\!_cmr2040_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.2\",\"matchCriteriaId\":\"ECD83A4C-DB7F-425C-882C-0DC809AD4A21\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:logo\\\\!_cmr2040:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6ED47A12-5637-40E2-BE39-B76B789C0DFD\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:simatic_rtu3031c_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"64954FA1-0F30-4D1D-8218-C3BA84C5AAF0\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:simatic_rtu3031c:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"48F0595C-286F-4EB1-8C25-D20FB92A95A0\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:simatic_rtu3041c_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0307A2DD-B616-4551-8C31-0B0EBE4A4B12\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:simatic_rtu3041c:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E57561E2-DC49-4D11-BBF1-40E7B14A6873\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:simatic_rtu3030c_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"61C3C191-5CEE-46F7-9231-BD2E246130E1\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:simatic_rtu3030c:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6A66DD04-4C58-45D8-A8C5-6817B05DBA14\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:simatic_rtu3000c_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6B3325EA-59B3-4BB6-923D-0D89CB8AAC25\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:simatic_rtu3000c:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D2E902CE-D319-4FC9-BC9B-7D8DB83FAD9B\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10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Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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