GSD-2023-28807

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
In Zscaler Internet Access (ZIA) a mismatch between Connect Host and Client Hello's Server Name Indication (SNI) enables attackers to evade network security controls by hiding their communications within legitimate traffic.
Aliases
Aliases
CVE-2023-28807
To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-28807",
    "id": "GSD-2023-28807"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-28807"
      ],
      "details": "In Zscaler Internet Access (ZIA) a mismatch between Connect Host and Client Hello\u0027s Server Name Indication (SNI) enables attackers to evade network security controls by hiding their communications within legitimate traffic.",
      "id": "GSD-2023-28807",
      "modified": "2023-12-13T01:20:48.460590Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@zscaler.com",
        "ID": "CVE-2023-28807",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "ZIA",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "0",
                          "version_value": "6.2r.290"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Zscaler"
            }
          ]
        }
      },
      "credits": [
        {
          "lang": "en",
          "value": "Citi Red Team"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In Zscaler Internet Access (ZIA) a mismatch between Connect Host and Client Hello\u0027s Server Name Indication (SNI) enables attackers to evade network security controls by hiding their communications within legitimate traffic."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.1.0-dev"
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-295",
                "lang": "eng",
                "value": "CWE-295 Improper Certificate Validation"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://help.zscaler.com/zia/configuring-advanced-settings#domain-fronting",
            "refsource": "MISC",
            "url": "https://help.zscaler.com/zia/configuring-advanced-settings#domain-fronting"
          },
          {
            "name": "https://help.zscaler.com/zia/configuring-advanced-settings#dns-optimization",
            "refsource": "MISC",
            "url": "https://help.zscaler.com/zia/configuring-advanced-settings#dns-optimization"
          }
        ]
      },
      "source": {
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:zscaler:secure_internet_and_saas_access:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "4DC095FA-C0CB-4E6F-B749-8DB0308F9C1C",
                    "versionEndExcluding": "6.2r.290",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "In Zscaler Internet Access (ZIA) a mismatch between Connect Host and Client Hello\u0027s Server Name Indication (SNI) enables attackers to evade network security controls by hiding their communications within legitimate traffic."
          },
          {
            "lang": "es",
            "value": "En Zscaler Internet Access (ZIA), una falta de coincidencia entre Connect Host y Client Hello\u0027s Server Name Indication (SNI) permite a los atacantes evadir los controles de seguridad de la red ocultando sus comunicaciones dentro del tr\u00e1fico leg\u00edtimo."
          }
        ],
        "id": "CVE-2023-28807",
        "lastModified": "2024-02-09T16:30:38.753",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 5.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.5,
              "impactScore": 2.5,
              "source": "cve@zscaler.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2024-01-31T20:15:44.903",
        "references": [
          {
            "source": "cve@zscaler.com",
            "tags": [
              "Product"
            ],
            "url": "https://help.zscaler.com/zia/configuring-advanced-settings#dns-optimization"
          },
          {
            "source": "cve@zscaler.com",
            "tags": [
              "Product"
            ],
            "url": "https://help.zscaler.com/zia/configuring-advanced-settings#domain-fronting"
          }
        ],
        "sourceIdentifier": "cve@zscaler.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-295"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-295"
              }
            ],
            "source": "cve@zscaler.com",
            "type": "Secondary"
          }
        ]
      }
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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