FKIE_CVE-2023-43658

Vulnerability from fkie_nvd - Published: 2023-10-16 22:15 - Updated: 2024-11-21 08:24
Severity ?
8.0 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
dicourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic. Improper escaping of event titles could lead to Cross-site Scripting (XSS) within the 'email preview' UI when a site has CSP disabled. Having CSP disabled is a non-default configuration, so the vast majority of sites are unaffected. This problem is resolved in the latest version of the discourse-calendar plugin. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.
References
security-advisories@github.comhttps://developer.mozilla.org/en-US/docs/Web/HTTP/CSPThird Party Advisory
security-advisories@github.comhttps://github.com/discourse/discourse-calendar/commit/9788310906febb36822d6823d14f1059c39644dePatch
security-advisories@github.comhttps://github.com/discourse/discourse-calendar/security/advisories/GHSA-3fwj-f6ww-7hr6Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://developer.mozilla.org/en-US/docs/Web/HTTP/CSPThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/discourse/discourse-calendar/commit/9788310906febb36822d6823d14f1059c39644dePatch
af854a3a-2127-422b-91ae-364da2661108https://github.com/discourse/discourse-calendar/security/advisories/GHSA-3fwj-f6ww-7hr6Vendor Advisory
Impacted products
Vendor Product Version
discourse discourse_calendar *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:discourse:discourse_calendar:*:*:*:*:*:discourse:*:*",
              "matchCriteriaId": "F346D3A9-CFE0-4941-BCFB-52700D54CABD",
              "versionEndIncluding": "2023-10-16",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "dicourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic. Improper escaping of event titles could lead to Cross-site Scripting (XSS) within the \u0027email preview\u0027 UI when a site has CSP disabled. Having CSP disabled is a non-default configuration, so the vast majority of sites are unaffected. This problem is resolved in the latest version of the discourse-calendar plugin. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum."
    },
    {
      "lang": "es",
      "value": "dicourse-calendar es un complemento para la plataforma de mensajer\u00eda Discourse que agrega la capacidad de crear un calendario din\u00e1mico en la primera publicaci\u00f3n de un tema. El escape inadecuado de los t\u00edtulos de los eventos podr\u00eda provocar Cross-Site Scripting (XSS) dentro de la interfaz de usuario de \"email preview\" cuando un sitio tiene CSP deshabilitado. Tener CSP deshabilitado es una configuraci\u00f3n no predeterminada, por lo que la gran mayor\u00eda de los sitios no se ven afectados. Este problema se resuelve en la \u00faltima versi\u00f3n del complemento de calendario de discourse. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben asegurarse de que CSP est\u00e9 habilitado en el foro."
    }
  ],
  "id": "CVE-2023-43658",
  "lastModified": "2024-11-21T08:24:33.717",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-10-16T22:15:12.143",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/discourse/discourse-calendar/commit/9788310906febb36822d6823d14f1059c39644de"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/discourse/discourse-calendar/security/advisories/GHSA-3fwj-f6ww-7hr6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/discourse/discourse-calendar/commit/9788310906febb36822d6823d14f1059c39644de"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/discourse/discourse-calendar/security/advisories/GHSA-3fwj-f6ww-7hr6"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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Sightings

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  • 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.