FKIE_CVE-2021-27393

Vulnerability from fkie_nvd - Published: 2021-04-22 21:15 - Updated: 2024-11-21 05:57
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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
productcert@siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdfVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-201384.pdfVendor Advisory
Impacted products
Vendor Product Version
siemens nucleus_net *
siemens nucleus_readystart_v3 *
siemens nucleus_source_code -
To clipboard 

{
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      "nodes": [
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          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7A987CFB-4A41-4F82-8C7F-31DE8F0650DE",
              "vulnerable": true
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              "matchCriteriaId": "68638787-E37D-483F-8E83-51C9A52ECC8D",
              "versionEndExcluding": "2013.08",
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  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2021-27393",
  "lastModified": "2024-11-21T05:57:54.343",
  "metrics": {
    "cvssMetricV2": [
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "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:N",
          "version": "3.1"
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        "source": "nvd@nist.gov",
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  "published": "2021-04-22T21:15:10.393",
  "references": [
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      "source": "productcert@siemens.com",
      "tags": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-330"
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      "type": "Primary"
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      "source": "nvd@nist.gov",
      "type": "Secondary"
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  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.