CVE-2023-48240

{"id": "CVE-2023-48240", "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.3}]}, "published": "2023-11-20T18:15:07.233", "references": [{"url": "https://github.com/xwiki/xwiki-platform/commit/bff0203e739b6e3eb90af5736f04278c73c2a8bb", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-7rfg-6273-f5wp", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://jira.xwiki.org/browse/XWIKI-20818", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-918"}]}, {"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-201"}, {"lang": "en", "value": "CWE-281"}, {"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "XWiki Platform is a generic wiki platform. The rendered diff in XWiki embeds images to be able to compare the contents and not display a difference for an actually unchanged image. For this, XWiki requests all embedded images on the server side. These requests are also sent for images from other domains and include all cookies that were sent in the original request to ensure that images with restricted view right can be compared. Starting in version 11.10.1 and prior to versions 14.10.15, 15.5.1, and 15.6, this allows an attacker to steal login and session cookies that allow impersonating the current user who views the diff. The attack can be triggered with an image that references the rendered diff, thus making it easy to trigger. Apart from stealing login cookies, this also allows server-side request forgery (the result of any successful request is returned in the image's source) and viewing protected content as once a resource is cached, it is returned for all users. As only successful requests are cached, the cache will be filled by the first user who is allowed to access the resource. This has been patched in XWiki 14.10.15, 15.5.1 and 15.6. The rendered diff now only downloads images from trusted domains. Further, cookies are only sent when the image's domain is the same the requested domain. The cache has been changed to be specific for each user. As a workaround, the image embedding feature can be disabled by deleting `xwiki-platform-diff-xml-<version>.jar` in `WEB-INF/lib/`."}, {"lang": "es", "value": "XWiki Platform es una plataforma wiki gen\u00e9rica. La diferencia renderizada en XWiki incorpora im\u00e1genes para poder comparar los contenidos y no mostrar una diferencia para una imagen realmente sin cambios. Para ello, XWiki solicita todas las im\u00e1genes incrustadas en el lado del servidor. Estas solicitudes tambi\u00e9n se env\u00edan para im\u00e1genes de otros dominios e incluyen todas las cookies que se enviaron en la solicitud original para garantizar que se puedan comparar las im\u00e1genes con derecho de visualizaci\u00f3n restringido. A partir de la versi\u00f3n 11.10.1 y anteriores a las versiones 14.10.15, 15.5.1 y 15.6, esto permite a un atacante robar cookies de inicio de sesi\u00f3n y sesi\u00f3n que permiten hacerse pasar por el usuario actual que ve la diferencia. El ataque se puede activar con una imagen que haga referencia a la diferencia renderizada, lo que facilita su activaci\u00f3n. Adem\u00e1s de robar cookies de inicio de sesi\u00f3n, esto tambi\u00e9n permite server-side request forgery (el resultado de cualquier solicitud exitosa se devuelve en la fuente de la imagen) y ver contenido protegido, ya que una vez que un recurso se almacena en cach\u00e9, se devuelve para todos los usuarios. Como solo se almacenan en cach\u00e9 las solicitudes exitosas, el primer usuario al que se le permita acceder al recurso completar\u00e1 la cach\u00e9. Esto ha sido parcheado en XWiki 14.10.15, 15.5.1 y 15.6. La diferencia renderizada ahora solo descarga im\u00e1genes de dominios confiables. Adem\u00e1s, las cookies s\u00f3lo se env\u00edan cuando el dominio de la imagen es el mismo que el dominio solicitado. El cach\u00e9 se ha cambiado para que sea espec\u00edfico para cada usuario. Como workaround, la funci\u00f3n de incrustaci\u00f3n de im\u00e1genes se puede desactivar eliminando `xwiki-platform-diff-xml-.jar` en `WEB-INF/lib/`."}], "lastModified": "2023-11-29T20:50:43.763", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B7C1E2D0-444F-42C8-87A4-4F9A2A8C75A2", "versionEndExcluding": "14.10.15", "versionStartIncluding": "11.10.1"}, {"criteria": "cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C6697094-C3B7-4746-AC50-1C99C9DECAC9", "versionEndExcluding": "15.5.1", "versionStartIncluding": "15.0"}, {"criteria": "cpe:2.3:a:xwiki:xwiki:15.6:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96F8B723-5227-4590-8626-C9CF0D3BC2B8"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}