{"containers":{"cna":{"affected":[{"product":"bigbluebutton","vendor":"bigbluebutton","versions":[{"status":"affected","version":">= 2.2, < 2.3.19"},{"status":"affected","version":">= 2.4.0, < 2.4.7"},{"status":"affected","version":">= 2.5-alpha-1, < 2.5.0-beta.2"}]}],"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2022-06-01T22:20:12.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rwrv-p665-4vwp"},{"tags":["x_refsource_MISC"],"url":"https://github.com/bigbluebutton/bigbluebutton/pull/14886"},{"tags":["x_refsource_MISC"],"url":"https://github.com/bigbluebutton/bigbluebutton/pull/14896"}],"source":{"advisory":"GHSA-rwrv-p665-4vwp","discovery":"UNKNOWN"},"title":"ReDoS on endpoint html5client/useragent in BigBlueButton","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2022-29169","STATE":"PUBLIC","TITLE":"ReDoS on endpoint html5client/useragent in BigBlueButton"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"bigbluebutton","version":{"version_data":[{"version_value":">= 2.2, < 2.3.19"},{"version_value":">= 2.4.0, < 2.4.7"},{"version_value":">= 2.5-alpha-1, < 2.5.0-beta.2"}]}}]},"vendor_name":"bigbluebutton"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","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."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-20: Improper Input Validation"}]}]},"references":{"reference_data":[{"name":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rwrv-p665-4vwp","refsource":"CONFIRM","url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rwrv-p665-4vwp"},{"name":"https://github.com/bigbluebutton/bigbluebutton/pull/14886","refsource":"MISC","url":"https://github.com/bigbluebutton/bigbluebutton/pull/14886"},{"name":"https://github.com/bigbluebutton/bigbluebutton/pull/14896","refsource":"MISC","url":"https://github.com/bigbluebutton/bigbluebutton/pull/14896"}]},"source":{"advisory":"GHSA-rwrv-p665-4vwp","discovery":"UNKNOWN"}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T06:17:54.142Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-rwrv-p665-4vwp"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/bigbluebutton/bigbluebutton/pull/14886"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/bigbluebutton/bigbluebutton/pull/14896"}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-23T15:54:39.682316Z","id":"CVE-2022-29169","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-04-23T18:20:31.969Z"}}]},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2022-29169","datePublished":"2022-06-01T22:20:12.000Z","dateReserved":"2022-04-13T00:00:00.000Z","dateUpdated":"2025-04-23T18:20:31.969Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}