GSD-2024-25623

Vulnerability from gsd - Updated: 2024-02-09 06:02
Details
Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn't check that the response from the remote server has a `Content-Type` header value of the Activity Streams media type, which allows a threat actor to upload a crafted Activity Streams document to a remote server and make a Mastodon server fetch it, if the remote server accepts arbitrary user uploads. The vulnerability allows a threat actor to impersonate an account on a remote server that satisfies all of the following properties: allows the attacker to register an account; accepts arbitrary user-uploaded documents and places them on the same domain as the ActivityPub actors; and serves user-uploaded document in response to requests with an `Accept` header value of the Activity Streams media type. Versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19 contain a fix for this issue.
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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-25623"
      ],
      "details": "Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn\u0027t check that the response from the remote server has a `Content-Type` header value of the Activity Streams media type, which allows a threat actor to upload a crafted Activity Streams document to a remote server and make a Mastodon server fetch it, if the remote server accepts arbitrary user uploads. The vulnerability allows a threat actor to impersonate an account on a remote server that satisfies all of the following properties: allows the attacker to register an account; accepts arbitrary user-uploaded documents and places them on the same domain as the ActivityPub actors; and serves user-uploaded document in response to requests with an `Accept` header value of the Activity Streams media type. Versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19 contain a fix for this issue.",
      "id": "GSD-2024-25623",
      "modified": "2024-02-09T06:02:34.439196Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2024-25623",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "mastodon",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003c 3.5.19"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 4.0.0, \u003c 4.0.15"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 4.1.0, \u003c 4.1.15"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 4.2.0, \u003c 4.2.7"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "mastodon"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn\u0027t check that the response from the remote server has a `Content-Type` header value of the Activity Streams media type, which allows a threat actor to upload a crafted Activity Streams document to a remote server and make a Mastodon server fetch it, if the remote server accepts arbitrary user uploads. The vulnerability allows a threat actor to impersonate an account on a remote server that satisfies all of the following properties: allows the attacker to register an account; accepts arbitrary user-uploaded documents and places them on the same domain as the ActivityPub actors; and serves user-uploaded document in response to requests with an `Accept` header value of the Activity Streams media type. Versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19 contain a fix for this issue."
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-434",
                "lang": "eng",
                "value": "CWE-434: Unrestricted Upload of File with Dangerous Type"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/mastodon/mastodon/security/advisories/GHSA-jhrq-qvrm-qr36",
            "refsource": "MISC",
            "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-jhrq-qvrm-qr36"
          },
          {
            "name": "https://github.com/mastodon/mastodon/commit/9fee5e852669e26f970e278021302e1a203fc022",
            "refsource": "MISC",
            "url": "https://github.com/mastodon/mastodon/commit/9fee5e852669e26f970e278021302e1a203fc022"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-jhrq-qvrm-qr36",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn\u0027t check that the response from the remote server has a `Content-Type` header value of the Activity Streams media type, which allows a threat actor to upload a crafted Activity Streams document to a remote server and make a Mastodon server fetch it, if the remote server accepts arbitrary user uploads. The vulnerability allows a threat actor to impersonate an account on a remote server that satisfies all of the following properties: allows the attacker to register an account; accepts arbitrary user-uploaded documents and places them on the same domain as the ActivityPub actors; and serves user-uploaded document in response to requests with an `Accept` header value of the Activity Streams media type. Versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19 contain a fix for this issue."
          },
          {
            "lang": "es",
            "value": "Mastodon es un servidor de red social gratuito y de c\u00f3digo abierto basado en ActivityPub. Antes de las versiones 4.2.7, 4.1.15, 4.0.15 y 3.5.19, al recuperar estados remotos, Mastodon no verifica que la respuesta del servidor remoto tenga un valor de encabezado \"Tipo de contenido\" de los flujos de actividad. tipo de medio, que permite a un actor de amenazas cargar un documento de Activity Streams manipulado a un servidor remoto y hacer que un servidor Mastodon lo recupere, si el servidor remoto acepta cargas arbitrarias de usuarios. La vulnerabilidad permite a un actor de amenazas hacerse pasar por una cuenta en un servidor remoto que cumple con todas las siguientes propiedades: permite al atacante registrar una cuenta; acepta documentos arbitrarios subidos por usuarios y los coloca en el mismo dominio que los actores de ActivityPub; y proporciona documentos subidos por el usuario en respuesta a solicitudes con un valor de encabezado \"Aceptar\" del tipo de medio Activity Streams. Las versiones 4.2.7, 4.1.15, 4.0.15 y 3.5.19 contienen una soluci\u00f3n para este problema."
          }
        ],
        "id": "CVE-2024-25623",
        "lastModified": "2024-02-20T19:50:53.960",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "LOW",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.1,
              "impactScore": 4.7,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2024-02-19T16:15:51.847",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/mastodon/mastodon/commit/9fee5e852669e26f970e278021302e1a203fc022"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-jhrq-qvrm-qr36"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-434"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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