CVE-2022-29169

{"id": "CVE-2022-29169", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2022-06-01T23:15:07.970", "references": [{"url": "https://github.com/bigbluebutton/bigbluebutton/pull/14886", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/bigbluebutton/bigbluebutton/pull/14896", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rwrv-p665-4vwp", "tags": ["Mitigation", "Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-1333"}]}, {"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}]}], "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"}], "lastModified": "2023-07-21T16:40:57.340", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3A9BA43E-5B7C-4B62-AE0E-72776BD3F281", "versionEndExcluding": "2.3.19", "versionStartIncluding": "2.2.0"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2DC6C975-3730-40C0-9FE1-EE4A40BCF98B", "versionEndExcluding": "2.4.7", "versionStartIncluding": "2.4.0"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5380CCEF-88B8-43AA-A76E-18076B1CAE94"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B30DFF3F-F71E-4412-88F8-790A4A4F459B"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F75A0FD2-BF0A-42AE-8D87-1A749BF1B47F"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "454FF756-9526-4A5E-A2A5-390393791F37"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F7AC4A50-4156-4856-B92D-09E128169D17"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2AB075EF-BD7A-4AD6-9B0E-2A0242198626"}, {"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:beta1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "080771DC-2CB1-4397-B10E-3B267A476205"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}