CVE-2021-3733

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An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability."}, {"lang": "es", "value": "Se presenta un fallo en la clase AbstractBasicAuthHandler de urllib. Un atacante que controle un servidor HTTP malicioso al que se conecte un cliente HTTP (como un navegador web), podr\u00eda desencadenar una Denegaci\u00f3n de Servicio por Expresi\u00f3n Regular (ReDOS) durante una petici\u00f3n de autenticaci\u00f3n con una carga \u00fatil especialmente dise\u00f1ada que sea enviada por el servidor al cliente. La mayor amenaza que supone este fallo es para la disponibilidad de la aplicaci\u00f3n"}], "lastModified": "2023-06-30T23:15:09.690", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C0AA4B12-CF3C-4327-983C-9067D7D97B57", "versionEndExcluding": "3.6.14"}, {"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "63D83236-D590-43D4-82C0-B0C656E02A29", "versionEndExcluding": "3.7.11", "versionStartIncluding": "3.7.0"}, {"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F85FAB1-4A42-447A-AC58-ED818123BDDC", "versionEndExcluding": "3.8.10", "versionStartIncluding": "3.8.0"}, {"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "91FD0AF9-B011-4238-8CF1-BDEA0399AF82", "versionEndExcluding": "3.9.5", "versionStartIncluding": "3.9.0"}, {"criteria": 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