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CVE-2018-0026

Estado: ModificadaAlta (7.5)—

Tras un reinicio o actualización del dispositivo Junos OS, la configuración del filtro del firewall sin estado podría no surtir efecto. Este problema puede verificarse ejecutando el comando user@re0> show interfaces extensive | match filters" CAM destination filters: 0, CAM source filters: 0 Note: cuando el problema ocurre, no muestra el filtro de firewall aplicado.

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La salida correcta debería mostrar el filtro de firewall aplicado, por ejemplo: user@re0> show interfaces extensive | match filters" CAM destination filters: 0, CAM source filters: 0 Input Filters: FIREWAL_FILTER_NAME- Este problema afecta a los filtros de firewall para cada familia de direcciones. Las versiones afectadas son Juniper Networks Junos OS: 15.1R4, 15.1R5, 15.1R6 y SR basados en estos MR. versiones 15.1X8 anteriores a la 15.1X8.3.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Juniper — Junos

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-0026",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "sirt@juniper.net",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 4.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
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  "affected": [
    {
      "source": "sirt@juniper.net",
      "affectedData": [
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          "vendor": "Juniper Networks",
          "product": "Junos OS",
          "versions": [
            {
              "status": "affected",
              "version": "15.1R4, 15.1R5, 15.1R6"
            },
            {
              "status": "affected",
              "version": "15.1X8",
              "lessThan": "15.1X8.3",
              "versionType": "custom"
            }
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  ],
  "published": "2018-07-11T18:29:00.293",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/104720",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "sirt@juniper.net"
    },
    {
      "url": "http://www.securitytracker.com/id/1041315",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "sirt@juniper.net"
    },
    {
      "url": "https://kb.juniper.net/JSA10859",
      "tags": [
        "Vendor Advisory"
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      "source": "sirt@juniper.net"
    },
    {
      "url": "http://www.securityfocus.com/bid/104720",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1041315",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://kb.juniper.net/JSA10859",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "After Junos OS device reboot or upgrade, the stateless firewall filter configuration may not take effect. This issue can be verified by running the command: user@re0> show interfaces <interface_name> extensive | match filters\" CAM destination filters: 0, CAM source filters: 0 Note: when the issue occurs, it does not show the applied firewall filter. The correct output should show the applied firewall filter, for example: user@re0> show interfaces <interface_name> extensive | match filters\" CAM destination filters: 0, CAM source filters: 0 Input Filters: FIREWAL_FILTER_NAME-<interface_name> This issue affects firewall filters for every address family. Affected releases are Juniper Networks Junos OS: 15.1R4, 15.1R5, 15.1R6 and SRs based on these MRs. 15.1X8 versions prior to 15.1X8.3."
    },
    {
      "lang": "es",
      "value": "Tras un reinicio o actualización del dispositivo Junos OS, la configuración del filtro del firewall sin estado podría no surtir efecto. Este problema puede verificarse ejecutando el comando user@re0> show interfaces  extensive | match filters\" CAM destination filters: 0, CAM source filters: 0 Note: cuando el problema ocurre, no muestra el filtro de firewall aplicado. La salida correcta debería mostrar el filtro de firewall aplicado, por ejemplo: user@re0> show interfaces  extensive | match filters\" CAM destination filters: 0, CAM source filters: 0 Input Filters: FIREWAL_FILTER_NAME- Este problema afecta a los filtros de firewall para cada familia de direcciones. Las versiones afectadas son Juniper Networks Junos OS: 15.1R4, 15.1R5, 15.1R6 y SR basados en estos MR. versiones 15.1X8 anteriores a la 15.1X8.3."
    }
  ],
  "lastModified": "2026-06-17T01:29:25.510",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*",
              "vulnerable": true,
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          "operator": "OR"
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  "sourceIdentifier": "sirt@juniper.net"
}