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CVE-2011-2012

Estado: ModificadaMedia (5)—

Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2, and SP1 does not properly validate session cookies, which allows remote attackers to cause a denial of service (IIS outage) via unspecified network traffic, aka "Null Session Cookie Crash."

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)

Microsoft — Forefront Unified Access Gateway

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2011-2012",
  "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:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2011-10-12T02:52:44.080",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/49980",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-079",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12799",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/49980",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-079",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12799",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2, and SP1 does not properly validate session cookies, which allows remote attackers to cause a denial of service (IIS outage) via unspecified network traffic, aka \"Null Session Cookie Crash.\""
    },
    {
      "lang": "es",
      "value": "Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2 y SP1 no validan correctamente las cookies de sesión, lo que permite a atacantes remotos provocar una denegación de servicio (interrupción de IIS) a través de tráfico de red no especificado. Es un problema también conocido como \"caida por cookie de sesión nula\"."
    }
  ],
  "lastModified": "2026-06-16T23:30:36.063",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C17E843B-C2FE-433B-B37A-615494AAB211"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "96448A86-3D9B-488C-A95C-4CCAE1FE177D"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:update1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8D9218D0-D3C5-400A-A8C4-C25160B746B9"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:update2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C8B9D477-AC0F-4271-ACEF-325C31E8BE40"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}