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CVE-2017-2331

Status: ModifiedHigh (7.3)—

A firewall bypass vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow a network-based malicious attacker to bypass firewall policies, leading to authentication bypass methods, information disclosure, modification of system files, and denials of service.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Juniper — Northstar Controller

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2017-2331",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
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        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
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        "cvssData": {
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
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          "attackComplexity": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
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        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
    {
      "source": "sirt@juniper.net",
      "affectedData": [
        {
          "vendor": "Juniper Networks",
          "product": "NorthStar Controller Application",
          "versions": [
            {
              "status": "affected",
              "version": "prior to version 2.1.0 Service Pack 1"
            }
          ]
        }
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    }
  ],
  "published": "2017-04-24T15:59:00.737",
  "references": [
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      "url": "http://www.securityfocus.com/bid/97619",
      "tags": [
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        "VDB Entry"
      ],
      "source": "sirt@juniper.net"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
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        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A firewall bypass vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow a network-based malicious attacker to bypass firewall policies, leading to authentication bypass methods, information disclosure, modification of system files, and denials of service."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de elusión de cortafuegos en Juniper Networks NorthStar Controller Application anterior a la versión 2.1.0 Service Pack 1 puede permitir a un atacante malicioso basado en red, eludir las políticas de firewall, conduciendo a métodos de elusión de autenticación, divulgación de información, modificación de archivos del sistema y denegaciones de servicio."
    }
  ],
  "lastModified": "2026-06-17T01:15:58.793",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:juniper:northstar_controller:*:*:*:*:*:*:*:*",
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              "versionEndIncluding": "2.1.0"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "sirt@juniper.net"
}