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CVE-2015-7756

Estado: ModificadaMedia (5)—

The encryption implementation in Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 makes it easier for remote attackers to discover the plaintext content of VPN sessions by sniffing the network for ciphertext data and conducting an unspecified decryption attack.

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 — Screenos

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2015-7756",
  "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:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-12-19T14:59:02.767",
  "references": [
    {
      "url": "http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.forbes.com/sites/thomasbrewster/2015/12/18/juniper-says-it-didnt-work-with-government-to-add-unauthorized-code-to-network-gear/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/640184",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id/1034489",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://adamcaudill.com/2015/12/17/much-ado-about-juniper/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/hdm/juniper-cve-2015-7755",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713",
      "tags": [
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.forbes.com/sites/thomasbrewster/2015/12/18/juniper-says-it-didnt-work-with-government-to-add-unauthorized-code-to-network-gear/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/640184",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1034489",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://adamcaudill.com/2015/12/17/much-ado-about-juniper/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/hdm/juniper-cve-2015-7755",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-310"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The encryption implementation in Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 makes it easier for remote attackers to discover the plaintext content of VPN sessions by sniffing the network for ciphertext data and conducting an unspecified decryption attack."
    },
    {
      "lang": "es",
      "value": "La implementación de cifrado en Juniper ScreenOS 6.2.0r15 hasta la versión 6.2.0r18, 6.3.0r12 en versiones anteriores a 6.3.0r12b, 6.3.0r13 en versiones anteriores a 6.3.0r13b, 6.3.0r14 en versiones anteriores a 6.3.0r14b, 6.3.0r15 en versiones anteriores a 6.3.0r15b, 6.3.0r16 en versiones anteriores a 6.3.0r16b, 6.3.0r17 en versiones anteriores a 6.3.0r17b, 6.3.0r18 en versiones anteriores a 6.3.0r18b, 6.3.0r19 en versiones anteriores a 6.3.0r19b y 6.3.0r20 en versiones anteriores a 6.3.0r21 facilita a atacantes remotos descubrir en texto plano el contenido de las sesiones VPN mediante el rastreo de la red en busca de datos de texto cifrados y llevar a cabo un ataque de descifrado no especificado."
    }
  ],
  "lastModified": "2026-06-17T00:33:04.753",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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  "sourceIdentifier": "cve@mitre.org"
}