CVE-2023-46218 (GCVE-0-2023-46218)

Vulnerability from cvelistv5 – Published: 2023-12-07 01:10 – Updated: 2025-06-30 16:20
VLAI?
Summary
This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
Impacted products
Vendor Product Version
curl curl Affected: 8.4.0 , ≤ 8.4.0 (semver)
Unaffected: 7.46.0 , < 7.46.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T20:37:40.148Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/2212193"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://curl.se/docs/CVE-2023-46218.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2023/dsa-5587"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20240125-0007/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-46218",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-28T16:38:08.000092Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-178",
                "description": "CWE-178 Improper Handling of Case Sensitivity",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-30T16:20:37.028Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.4.0",
              "status": "affected",
              "version": "8.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "7.46.0",
              "status": "unaffected",
              "version": "7.46.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "This flaw allows a malicious HTTP server to set \"super cookies\" in curl that\nare then passed back to more origins than what is otherwise allowed or\npossible. This allows a site to set cookies that then would get sent to\ndifferent and unrelated sites and domains.\n\nIt could do this by exploiting a mixed case flaw in curl\u0027s function that\nverifies a given cookie domain against the Public Suffix List (PSL). For\nexample a cookie could be set with `domain=co.UK` when the URL used a lower\ncase hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-25T14:06:39.330Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "url": "https://hackerone.com/reports/2212193"
        },
        {
          "url": "https://curl.se/docs/CVE-2023-46218.html"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html"
        },
        {
          "url": "https://www.debian.org/security/2023/dsa-5587"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20240125-0007/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2023-46218",
    "datePublished": "2023-12-07T01:10:34.846Z",
    "dateReserved": "2023-10-19T01:00:12.854Z",
    "dateUpdated": "2025-06-30T16:20:37.028Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-46218\",\"sourceIdentifier\":\"support@hackerone.com\",\"published\":\"2023-12-07T01:15:07.160\",\"lastModified\":\"2025-06-30T17:15:29.967\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"This flaw allows a malicious HTTP server to set \\\"super cookies\\\" in curl that\\nare then passed back to more origins than what is otherwise allowed or\\npossible. This allows a site to set cookies that then would get sent to\\ndifferent and unrelated sites and domains.\\n\\nIt could do this by exploiting a mixed case flaw in curl\u0027s function that\\nverifies a given cookie domain against the Public Suffix List (PSL). For\\nexample a cookie could be set with `domain=co.UK` when the URL used a lower\\ncase hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain.\"},{\"lang\":\"es\",\"value\":\"Esta falla permite que un servidor HTTP malicioso establezca \\\"supercookies\\\" en curl que luego se devuelven a m\u00e1s or\u00edgenes de los que est\u00e1n permitidos o son posibles. Esto permite que un sitio establezca cookies que luego se enviar\u00e1n a sitios y dominios diferentes y no relacionados. Podr\u00eda hacer esto explotando una falla de may\u00fasculas y min\u00fasculas en la funci\u00f3n de curl que verifica un dominio de cookie determinado con Public Suffix List (PSL). Por ejemplo, una cookie podr\u00eda configurarse con `domain=co.UK` cuando la URL utilizaba un nombre de host en min\u00fascula `curl.co.uk`, aunque `co.uk` aparezca como un dominio PSL.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-178\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.46.0\",\"versionEndIncluding\":\"8.4.0\",\"matchCriteriaId\":\"CDCA27BA-B527-4B8F-91D5-CEE58282FD45\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646\"}]}]}],\"references\":[{\"url\":\"https://curl.se/docs/CVE-2023-46218.html\",\"source\":\"support@hackerone.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://hackerone.com/reports/2212193\",\"source\":\"support@hackerone.com\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html\",\"source\":\"support@hackerone.com\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/\",\"source\":\"support@hackerone.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/\",\"source\":\"support@hackerone.com\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20240125-0007/\",\"source\":\"support@hackerone.com\"},{\"url\":\"https://www.debian.org/security/2023/dsa-5587\",\"source\":\"support@hackerone.com\"},{\"url\":\"https://curl.se/docs/CVE-2023-46218.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://hackerone.com/reports/2212193\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20240125-0007/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2023/dsa-5587\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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.