GHSA-X3QX-M3C2-QFHX

Vulnerability from github – Published: 2023-10-18 06:30 – Updated: 2025-11-04 21:30
VLAI?
Details

This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the specific series of conditions are met.

libcurl performs transfers. In its API, an application creates "easy handles" that are the individual handles for single transfers.

libcurl provides a function call that duplicates en easy handle called curl_easy_duphandle.

If a transfer has cookies enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned version of the handle would instead store the file name as none (using the four ASCII letters, no quotes).

Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would then inadvertently load cookies from a file named none - if such a file exists and is readable in the current directory of the program using libcurl. And if using the correct file format of course.

Severity ?
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2023-38546"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-10-18T04:15:11Z",
    "severity": "LOW"
  },
  "details": "This flaw allows an attacker to insert cookies at will into a running program\nusing libcurl, if the specific series of conditions are met.\n\nlibcurl performs transfers. In its API, an application creates \"easy handles\"\nthat are the individual handles for single transfers.\n\nlibcurl provides a function call that duplicates en easy handle called\n[curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html).\n\nIf a transfer has cookies enabled when the handle is duplicated, the\ncookie-enable state is also cloned - but without cloning the actual\ncookies. If the source handle did not read any cookies from a specific file on\ndisk, the cloned version of the handle would instead store the file name as\n`none` (using the four ASCII letters, no quotes).\n\nSubsequent use of the cloned handle that does not explicitly set a source to\nload cookies from would then inadvertently load cookies from a file named\n`none` - if such a file exists and is readable in the current directory of the\nprogram using libcurl. And if using the correct file format of course.",
  "id": "GHSA-x3qx-m3c2-qfhx",
  "modified": "2025-11-04T21:30:45Z",
  "published": "2023-10-18T06:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38546"
    },
    {
      "type": "WEB",
      "url": "https://curl.se/docs/CVE-2023-38546.html"
    },
    {
      "type": "WEB",
      "url": "https://forum.vmssoftware.com/viewtopic.php?f=8\u0026t=8868"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00016.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGMXNRNSJ4ETDK6FRNU3J7SABXPWCHSQ"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214036"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214057"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214058"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214063"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2024/Jan/34"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2024/Jan/37"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2024/Jan/38"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.