github - ghsa-chhh-4xrf-42pg

ghsa-chhh-4xrf-42pg

Vulnerability from github

Published

2024-07-24 09:30

Modified

2024-08-01 15:32

Severity ?

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Details

libcurl's URL API function curl_url_get() offers punycode conversions, to and from IDN. Asking to convert a name that is exactly 256 bytes, libcurl ends up reading outside of a stack based buffer when built to use the macidn IDN backend. The conversion function then fills up the provided buffer exactly - but does not null terminate the string.

This flaw can lead to stack contents accidently getting returned as part of the converted string.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-6874"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-24T08:15:03Z",
    "severity": "LOW"
  },
  "details": "libcurl\u0027s URL API function\n[curl_url_get()](https://curl.se/libcurl/c/curl_url_get.html) offers punycode\nconversions, to and from IDN. Asking to convert a name that is exactly 256\nbytes, libcurl ends up reading outside of a stack based buffer when built to\nuse the *macidn* IDN backend. The conversion function then fills up the\nprovided buffer exactly - but does not null terminate the string.\n\nThis flaw can lead to stack contents accidently getting returned as part of\nthe converted string.",
  "id": "GHSA-chhh-4xrf-42pg",
  "modified": "2024-08-01T15:32:07Z",
  "published": "2024-07-24T09:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6874"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/2604391"
    },
    {
      "type": "WEB",
      "url": "https://curl.se/docs/CVE-2024-6874.html"
    },
    {
      "type": "WEB",
      "url": "https://curl.se/docs/CVE-2024-6874.json"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/24/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-6874

Vulnerability from cvelistv5

Published

2024-07-24 07:36

Modified

2024-08-22 18:03

Severity ?

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Summary

macidn punycode buffer overread

References

▼	URL	Tags
	https://curl.se/docs/CVE-2024-6874.json
	https://curl.se/docs/CVE-2024-6874.html
	https://hackerone.com/reports/2604391
	http://www.openwall.com/lists/oss-security/2024/07/24/2

Impacted products

▼	Vendor	Product
	curl	curl

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:curl:libcurl:8.8.0:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "libcurl",
            "vendor": "curl",
            "versions": [
              {
                "status": "affected",
                "version": "8.8.0"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 3.1,
              "baseSeverity": "LOW",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-6874",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-24T16:13:40.560966Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-24T16:25:51.575Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-22T18:03:17.766Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "json",
            "tags": [
              "x_transferred"
            ],
            "url": "https://curl.se/docs/CVE-2024-6874.json"
          },
          {
            "name": "www",
            "tags": [
              "x_transferred"
            ],
            "url": "https://curl.se/docs/CVE-2024-6874.html"
          },
          {
            "name": "issue",
            "tags": [
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/2604391"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/07/24/2"
          },
          {
            "url": "https://security.netapp.com/advisory/ntap-20240822-0004/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "z2_"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "z2_"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libcurl\u0027s URL API function\n[curl_url_get()](https://curl.se/libcurl/c/curl_url_get.html) offers punycode\nconversions, to and from IDN. Asking to convert a name that is exactly 256\nbytes, libcurl ends up reading outside of a stack based buffer when built to\nuse the *macidn* IDN backend. The conversion function then fills up the\nprovided buffer exactly - but does not null terminate the string.\n\nThis flaw can lead to stack contents accidently getting returned as part of\nthe converted string."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-126 Buffer Over-read ",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-07-24T07:36:26.887Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2024-6874.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2024-6874.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/2604391"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2024/07/24/2"
        }
      ],
      "title": "macidn punycode buffer overread"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2024-6874",
    "datePublished": "2024-07-24T07:36:26.887Z",
    "dateReserved": "2024-07-18T03:37:32.294Z",
    "dateUpdated": "2024-08-22T18:03:17.766Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted