{ "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" }