{ "containers": { "cna": { "affected": [ { "product": "Apache Wicket", "vendor": "Apache Software Foundation", "versions": [ { "lessThanOrEqual": "9.2.0", "status": "affected", "version": "Apache Wicket 9.x", "versionType": "custom" }, { "lessThanOrEqual": "8.11.0", "status": "affected", "version": "Apache Wicket 8.x", "versionType": "custom" }, { "lessThanOrEqual": "7.17.0", "status": "affected", "version": "Apache Wicket 7.x", "versionType": "custom" }, { "lessThan": "Apache Wicket 6.x*", "status": "affected", "version": "6.2.0", "versionType": "custom" } ] } ], "credits": [ { "lang": "en", "value": "Apache Wicket would like to thank Jonathan Juursema from Topicus.Healthcare for reporting this issue." } ], "descriptions": [ { "lang": "en", "value": "A DNS proxy and possible amplification attack vulnerability in WebClientInfo of Apache Wicket allows an attacker to trigger arbitrary DNS lookups from the server when the X-Forwarded-For header is not properly sanitized. This DNS lookup can be engineered to overload an internal DNS server or to slow down request processing of the Apache Wicket application causing a possible denial of service on either the internal infrastructure or the web application itself. This issue affects Apache Wicket Apache Wicket 9.x version 9.2.0 and prior versions; Apache Wicket 8.x version 8.11.0 and prior versions; Apache Wicket 7.x version 7.17.0 and prior versions and Apache Wicket 6.x version 6.2.0 and later versions." } ], "problemTypes": [ { "descriptions": [ { "description": "DNS proxy and possible amplification attack", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2021-05-26T16:06:16.000Z", "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://lists.apache.org/thread.html/rc2ef22f90793e158cef65a7e370cdbca023c499d1403d65feeca870d%40%3Cusers.wicket.apache.org%3E" }, { "name": "[wicket-announce] 20210526 Re: CVE-2021-23937: Apache Wicket: DNS proxy and possible amplification attack", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.apache.org/thread.html/r127c0c1f3cb71e5bc619ad1e4b898b97c49758d1f20a54042966473e%40%3Cannounce.wicket.apache.org%3E" }, { "name": "[wicket-users] 20210526 Re: CVE-2021-23937: Apache Wicket: DNS proxy and possible amplification attack", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.apache.org/thread.html/r127c0c1f3cb71e5bc619ad1e4b898b97c49758d1f20a54042966473e%40%3Cusers.wicket.apache.org%3E" }, { "name": "[wicket-dev] 20210526 Re: CVE-2021-23937: Apache Wicket: DNS proxy and possible amplification attack", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.apache.org/thread.html/r8ccbd91b56ebf045d151bd4282bfeea7842a0698a0b76118fca8fe78%40%3Cdev.wicket.apache.org%3E" } ], "source": { "discovery": "UNKNOWN" }, "title": "DNS proxy and possible amplification attack", "workarounds": [ { "lang": "en", "value": "Sanitize the X-Forwarded-For header by running an Apache Wicket application behind a reverse HTTP proxy. This proxy should put the client IP address in the X-Forwarded-For header and not pass through the contents of the header as received by the client." } ], "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@apache.org", "ID": "CVE-2021-23937", "STATE": "PUBLIC", "TITLE": "DNS proxy and possible amplification attack" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Apache Wicket", "version": { "version_data": [ { "version_affected": "<=", "version_name": "Apache Wicket 9.x", "version_value": "9.2.0" }, { "version_affected": "<=", "version_name": "Apache Wicket 8.x", "version_value": "8.11.0" }, { "version_affected": "<=", "version_name": "Apache Wicket 7.x", "version_value": "7.17.0" }, { "version_affected": ">=", "version_name": "Apache Wicket 6.x", "version_value": "6.2.0" } ] } } ] }, "vendor_name": "Apache Software Foundation" } ] } }, "credit": [ { "lang": "eng", "value": "Apache Wicket would like to thank Jonathan Juursema from Topicus.Healthcare for reporting this issue." } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A DNS proxy and possible amplification attack vulnerability in WebClientInfo of Apache Wicket allows an attacker to trigger arbitrary DNS lookups from the server when the X-Forwarded-For header is not properly sanitized. 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