FKIE_CVE-2023-28807

Vulnerability from fkie_nvd - Published: 2024-01-31 20:15 - Updated: 2024-11-21 07:56
Severity ?
5.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
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.
References
cve@zscaler.comhttps://help.zscaler.com/zia/configuring-advanced-settings#dns-optimizationProduct
cve@zscaler.comhttps://help.zscaler.com/zia/configuring-advanced-settings#domain-frontingProduct
af854a3a-2127-422b-91ae-364da2661108https://help.zscaler.com/zia/configuring-advanced-settings#dns-optimizationProduct
af854a3a-2127-422b-91ae-364da2661108https://help.zscaler.com/zia/configuring-advanced-settings#domain-frontingProduct
Impacted products
Vendor Product Version
zscaler secure_internet_and_saas_access *
To clipboard 

{
  "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"
        }
      ]
    }
  ],
  "cveTags": [],
  "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": "2024-11-21T07:56:03.310",
  "metrics": {
    "cvssMetricV31": [
      {
        "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"
      },
      {
        "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"
      }
    ]
  },
  "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"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product"
      ],
      "url": "https://help.zscaler.com/zia/configuring-advanced-settings#dns-optimization"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product"
      ],
      "url": "https://help.zscaler.com/zia/configuring-advanced-settings#domain-fronting"
    }
  ],
  "sourceIdentifier": "cve@zscaler.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ],
      "source": "cve@zscaler.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.