nvd-json-data-feeds/CVE-2022/CVE-2022-291xx/CVE-2022-29169.json

{
  "id": "CVE-2022-29169",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2022-06-01T23:15:07.970",
  "lastModified": "2024-11-21T06:58:37.840",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "BigBlueButton is an open source web conferencing system. Versions starting with 2.2 and prior to 2.3.19, 2.4.7, and 2.5.0-beta.2 are vulnerable to regular expression denial of service (ReDoS) attacks. By using specific a RegularExpression, an attacker can cause denial of service for the bbb-html5 service. The useragent library performs checking of device by parsing the input of User-Agent header and lets it go through lookupUserAgent() (alias of useragent.lookup() ). This function handles input by regexing and attackers can abuse that by providing some ReDos payload using `SmartWatch`. The maintainers removed `htmlclient/useragent` from versions 2.3.19, 2.4.7, and 2.5.0-beta.2. As a workaround, disable NginX forwarding the requests to the handler according to the directions in the GitHub Security Advisory."
    },
    {
      "lang": "es",
      "value": "BigBlueButton es un sistema de conferencias web de c\u00f3digo abierto. Las versiones a partir de 2.2 y anteriores a 2.3.19, 2.4.7 y 2.5.0-beta.2 son vulnerables a ataques de denegaci\u00f3n de servicio con expresiones regulares (ReDoS). Usando una RegularExpression espec\u00edfica, un atacante puede causar una denegaci\u00f3n de servicio para el servicio bbb-html5. La biblioteca useragent lleva a cabo una comprobaci\u00f3n del dispositivo al analizar la entrada del encabezado User-Agent y la hace pasar por lookupUserAgent() (alias de useragent.lookup() ). Esta funci\u00f3n maneja la entrada mediante regexing y atacantes pueden abusar de ello  al proporcionar alguna carga \u00fatil ReDos usando \"SmartWatch\". Los mantenedores han eliminado \"htmlclient/useragent\" de las versiones 2.3.19, 2.4.7 y 2.5.0-beta.2. Como mitigaci\u00f3n, deshabilite que NginX reenv\u00ede las peticiones al administrador seg\u00fan las indicaciones del aviso de seguridad de GitHub"
    }
  ],
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          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 3.9,
        "impactScore": 3.6
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        "type": "Primary",
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        },
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