CVE-2021-27393
Vulnerability from cvelistv5
Published
2021-04-22 20:42
Modified
2024-08-03 20:48
Severity ?
EPSS score ?
Summary
A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2013.08), Nucleus Source Code (Versions including affected DNS modules). The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving.
References
▼ | URL | Tags | |
---|---|---|---|
productcert@siemens.com | https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf | Vendor Advisory |
Impacted products
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The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving." } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-330", "description": "CWE-330: Use of Insufficiently Random Values", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2022-01-11T11:27:04", "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "shortName": "siemens" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "productcert@siemens.com", "ID": "CVE-2021-27393", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Nucleus NET", "version": { "version_data": [ { "version_value": "All versions" } ] } }, { "product_name": "Nucleus ReadyStart V3", "version": { "version_data": [ { "version_value": "All versions \u003c V2013.08" } ] } }, { "product_name": "Nucleus Source Code", "version": { "version_data": [ { "version_value": "Versions including affected DNS modules" } ] } } ] }, "vendor_name": "Siemens" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2013.08), Nucleus Source Code (Versions including affected DNS modules). The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-330: Use of Insufficiently Random Values" } ] } ] }, "references": { "reference_data": [ { "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf", "refsource": "MISC", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf" } ] } } } }, "cveMetadata": { "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "assignerShortName": "siemens", "cveId": "CVE-2021-27393", "datePublished": "2021-04-22T20:42:21", "dateReserved": "2021-02-18T00:00:00", "dateUpdated": "2024-08-03T20:48:16.739Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-27393\",\"sourceIdentifier\":\"productcert@siemens.com\",\"published\":\"2021-04-22T21:15:10.393\",\"lastModified\":\"2022-04-22T19:38:54.327\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2013.08), Nucleus Source Code (Versions including affected DNS modules). The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving.\"},{\"lang\":\"es\",\"value\":\"Se ha identificado una vulnerabilidad en Nucleus NET (Todas las versiones), Nucleus ReadyStart V3 (Todas las versiones anteriores a V2013.08), Nucleus Source Code (Versiones que incluyen los m\u00f3dulos DNS afectados). El cliente DNS no aleatoriza correctamente los n\u00fameros de puerto UDP de las peticiones DNS. Esto podr\u00eda permitir a un atacante envenenar la cach\u00e9 DNS o falsificar la resoluci\u00f3n DNS.\"}],\"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:L/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.0},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"productcert@siemens.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-330\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-330\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7A987CFB-4A41-4F82-8C7F-31DE8F0650DE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2013.08\",\"matchCriteriaId\":\"68638787-E37D-483F-8E83-51C9A52ECC8D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"53A38C64-612A-4BC5-83D5-D3FA1C90E0F7\"}]}]}],\"references\":[{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdf\",\"source\":\"productcert@siemens.com\",\"tags\":[\"Vendor Advisory\"]}]}}" } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.