CVE-2023-38546 (GCVE-0-2023-38546)

Vulnerability from cvelistv5 – Published: 2023-10-18 03:51 – Updated: 2026-07-14 12:03
VLAI
Summary
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](https://curl.se/libcurl/c/curl_easy_duphandle.html). 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
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-13 15:01 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
curl curl Affected: 8.4.0 , < 8.4.0 (semver)
Unaffected: 7.9.1 , < 7.9.1 (semver)
guessed Create a notification for this product.
Siemens RUGGEDCOM APE1808 Affected: 0 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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            "value": "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."
          },
          {
            "lang": "es",
            "value": "Esta falla permite a un atacante insertar cookies a voluntad en un programa en ejecuci\u00f3n usando libcurl, si se cumple una serie espec\u00edfica de condiciones. libcurl realiza transferencias. En su API, una aplicaci\u00f3n crea \"easy handles\" que son identificadores individuales para transferencias individuales. libcurl proporciona una llamada de funci\u00f3n que duplica un identificador sencillo llamado [curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). Si una transferencia tiene cookies habilitadas cuando el identificador est\u00e1 duplicado, el estado de habilitaci\u00f3n de cookies tambi\u00e9n se clona, pero sin clonar las cookies reales. Si el identificador de origen no ley\u00f3 ninguna cookie de un archivo espec\u00edfico en el disco, la versi\u00f3n clonada del identificador almacenar\u00eda el nombre del archivo como \"none\" (usando las cuatro letras ASCII, sin comillas). El uso posterior del identificador clonado que no establece expl\u00edcitamente una fuente desde la cual cargar cookies cargar\u00eda inadvertidamente cookies desde un archivo llamado \"none\", si dicho archivo existe y es legible en el directorio actual del programa usando libcurl. Y si utiliza el formato de archivo correcto, por supuesto."
          }
        ],
        "id": "CVE-2023-38546",
        "lastModified": "2026-06-17T06:10:41.860",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
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                "baseScore": 3.7,
                "baseSeverity": "LOW",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
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                "version": "2.0.3"
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            "url": "https://support.apple.com/kb/HT214058"
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            "url": "http://seclists.org/fulldisclosure/2024/Jan/34"
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          {
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            "url": "http://seclists.org/fulldisclosure/2024/Jan/37"
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            "url": "http://seclists.org/fulldisclosure/2024/Jan/38"
          },
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          },
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          },
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          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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          }
        ],
        "sourceIdentifier": "support@hackerone.com",
        "vulnStatus": "Modified",
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                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
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    },
    "redhat_vex": {
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      "current_release_date": "2026-09-21T05:52:43+00:00",
      "cve": "CVE-2023-38546",
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      "product_status:fixed": "509",
      "product_status:known_affected": "11",
      "product_status:known_not_affected": "147",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "curl: cookie injection with none file",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-38546.json",
      "version": "3"
    },
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      "current_release_date": "2026-09-02T01:51:48Z",
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      "id": "CVE-2023-38546",
      "initial_release_date": "2023-10-12T14:35:26Z",
      "product_status:known_affected": "271",
      "product_status:recommended": "392",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-38546",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-38546.json",
      "version": "66"
    },
    "vulnrichment": {
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                ],
                "url": "https://curl.se/docs/CVE-2023-38546.html"
              },
              {
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                ],
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              },
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                "url": "https://forum.vmssoftware.com/viewtopic.php?f=8\u0026t=8868"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00016.html"
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            ],
            "title": "CVE Program Container"
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                "product": "RUGGEDCOM APE1808",
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              },
              {
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              },
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              }
            ],
            "x_adpType": "supplier"
          },
          {
            "metrics": [
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                      },
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                      },
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                      }
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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              "value": "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."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-07-09T13:27:34.245Z",
            "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
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          },
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            },
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            },
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            },
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              "url": "http://seclists.org/fulldisclosure/2024/Jan/38"
            },
            {
              "url": "https://forum.vmssoftware.com/viewtopic.php?f=8\u0026t=8868"
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        "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "assignerShortName": "hackerone",
        "cveId": "CVE-2023-38546",
        "datePublished": "2023-10-18T03:51:31.276Z",
        "dateReserved": "2023-07-20T01:00:12.444Z",
        "dateUpdated": "2026-07-14T12:03:15.825Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.