FKIE_CVE-2023-4966

Vulnerability from fkie_nvd - Published: 2023-10-10 14:15 - Updated: 2026-07-31 04:16
Severity
9.4 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA  virtual server.
References
secure@citrix.comhttp://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
secure@citrix.comhttps://support.citrix.com/article/CTX579459Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://support.citrix.com/article/CTX579459Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966US Government Resource
Impacted products
Vendor Product Version
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_gateway *
citrix netscaler_gateway *
citrix netscaler_gateway *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "NetScaler ADC",
          "vendor": "Citrix",
          "versions": [
            {
              "lessThan": "8.50",
              "status": "affected",
              "version": "14.1",
              "versionType": "patch"
            },
            {
              "lessThan": "49.15",
              "status": "affected",
              "version": "13.1",
              "versionType": "patch"
            },
            {
              "lessThan": "92.19",
              "status": "affected",
              "version": "13.0",
              "versionType": "patch"
            },
            {
              "lessThan": "37.164",
              "status": "affected",
              "version": "13.1-FIPS",
              "versionType": "patch"
            },
            {
              "lessThan": "55.300",
              "status": "affected",
              "version": "12.1-FIPS",
              "versionType": "patch"
            },
            {
              "lessThan": "55.300",
              "status": "affected",
              "version": "12.1-NDcPP",
              "versionType": "patch"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "NetScaler Gateway",
          "vendor": "Citrix",
          "versions": [
            {
              "lessThan": "8.50",
              "status": "affected",
              "version": "14.1",
              "versionType": "patch"
            },
            {
              "lessThan": "49.15",
              "status": "affected",
              "version": "13.1",
              "versionType": "patch"
            },
            {
              "lessThan": "92.19",
              "status": "affected",
              "version": "13.0",
              "versionType": "patch"
            }
          ]
        }
      ],
      "source": "secure@citrix.com"
    }
  ],
  "cisaActionDue": "2023-11-08",
  "cisaExploitAdd": "2023-10-18",
  "cisaRequiredAction": "Apply mitigations and kill all active and persistent sessions per vendor instructions [https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/] OR discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
              "matchCriteriaId": "492BEB4B-7A4B-47C2-93D1-2B0683AA3A20",
              "versionEndExcluding": "12.1-55.300",
              "versionStartIncluding": "12.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*",
              "matchCriteriaId": "81EF12C2-4197-4C0D-BE11-556F05DAD646",
              "versionEndExcluding": "12.1-55.300",
              "versionStartIncluding": "12.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "9EEC53B2-686A-4C6F-98DE-5D6AE804B0A8",
              "versionEndExcluding": "13.0-92.19",
              "versionStartIncluding": "13.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
              "matchCriteriaId": "109301A8-9ADD-4A49-9C45-D21A4DA840E9",
              "versionEndExcluding": "13.1-37.164",
              "versionStartIncluding": "13.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "5C1739C5-48C1-46BC-A524-B4CC4C5B6436",
              "versionEndExcluding": "13.1-49.15",
              "versionStartIncluding": "13.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "9148C36D-98B4-4166-8B9A-449EA86BA4B1",
              "versionEndExcluding": "14.1-8.50",
              "versionStartIncluding": "14.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5FB1412D-F8D8-4592-A8A9-C1B841B93D5E",
              "versionEndExcluding": "13.0-92.19",
              "versionStartIncluding": "13.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "28A08B32-D145-499F-866E-BEEEDEBB2901",
              "versionEndExcluding": "13.1-49.15",
              "versionStartIncluding": "13.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4F1610E6-FE48-4339-8E74-765E0517E33D",
              "versionEndExcluding": "14.1-8.50",
              "versionStartIncluding": "14.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Sensitive information disclosure\u00a0in NetScaler ADC and NetScaler Gateway when configured as a\u00a0Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy)\u00a0or\u00a0AAA \u202fvirtual\u202fserver."
    },
    {
      "lang": "es",
      "value": "Divulgaci\u00f3n de informaci\u00f3n confidencial en NetScaler ADC y NetScaler Gateway cuando se configura como Gateway (servidor virtual VPN, ICA Proxy, CVPN, RDP Proxy) o servidor \"virtual\" AAA."
    }
  ],
  "id": "CVE-2023-4966",
  "lastModified": "2026-07-31T04:16:44.230",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 9.4,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.5,
        "source": "secure@citrix.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-4966",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2023-10-10T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-10-10T14:15:10.977",
  "references": [
    {
      "source": "secure@citrix.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html"
    },
    {
      "source": "secure@citrix.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://support.citrix.com/article/CTX579459"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://support.citrix.com/article/CTX579459"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966"
    }
  ],
  "sourceIdentifier": "secure@citrix.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "secure@citrix.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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