CVE-2024-34064

{"id": "CVE-2024-34064", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "published": "2024-05-06T15:15:23.803", "references": [{"url": "https://github.com/pallets/jinja/commit/0668239dc6b44ef38e7a6c9f91f312fd4ca581cb", "source": "security-advisories@github.com"}, {"url": "https://github.com/pallets/jinja/security/advisories/GHSA-h75v-3vvj-5mfj", "source": "security-advisories@github.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/567XIGSZMABG6TSMYWD7MIYNJSUQQRUC/", "source": "security-advisories@github.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCLF44KY43BSVMTE6S53B4V5WP3FRRSE/", "source": "security-advisories@github.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SSCBHIL6BYKR5NRCBXP4XMP2CEEKGFVS/", "source": "security-advisories@github.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZALNWE3TXPPHVPSI3AZ5CTMSTAVN5UMS/", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Jinja is an extensible templating engine. The `xmlattr` filter in affected versions of Jinja accepts keys containing non-attribute characters. XML/HTML attributes cannot contain spaces, `/`, `>`, or `=`, as each would then be interpreted as starting a separate attribute. If an application accepts keys (as opposed to only values) as user input, and renders these in pages that other users see as well, an attacker could use this to inject other attributes and perform XSS. The fix for CVE-2024-22195 only addressed spaces but not other characters. Accepting keys as user input is now explicitly considered an unintended use case of the `xmlattr` filter, and code that does so without otherwise validating the input should be flagged as insecure, regardless of Jinja version. Accepting _values_ as user input continues to be safe. This vulnerability is fixed in 3.1.4."}, {"lang": "es", "value": "Jinja es un motor de plantillas extensible. El filtro `xmlattr` en las versiones afectadas de Jinja acepta claves que contienen caracteres que no son de atributo. Los atributos XML/HTML no pueden contener espacios, `/`, `>` o `=`, ya que cada uno se interpretar\u00eda como el inicio de un atributo independiente. Si una aplicaci\u00f3n acepta claves (en lugar de solo valores) como entrada del usuario y las muestra en p\u00e1ginas que otros usuarios tambi\u00e9n ven, un atacante podr\u00eda usar esto para inyectar otros atributos y realizar XSS. La soluci\u00f3n para CVE-2024-22195 solo abordaba los espacios, pero no otros caracteres. Aceptar claves como entrada del usuario ahora se considera expl\u00edcitamente un caso de uso no intencionado del filtro `xmlattr`, y el c\u00f3digo que lo hace sin validar la entrada debe marcarse como inseguro, independientemente de la versi\u00f3n de Jinja. Aceptar _valores_ como entrada del usuario sigue siendo seguro. Esta vulnerabilidad se soluciona en 3.1.4."}], "lastModified": "2024-06-10T18:15:34.583", "sourceIdentifier": "security-advisories@github.com"}