{"id":"GHSA-rhcw-wjcm-9h6g","summary":"Denial of service in Undertow","details":"A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.","aliases":["CVE-2020-27782"],"modified":"2023-11-01T04:52:50.514469Z","published":"2022-02-09T00:54:12Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2021-03-31T23:48:27Z","nvd_published_at":"2021-02-23T19:15:00Z","cwe_ids":["CWE-400"],"severity":"HIGH"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27782"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/997/commits/98a9ab7f2d7fe7a7254eaf17d47816c452169c90"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1901304"},{"type":"WEB","url":"https://issues.redhat.com/browse/UNDERTOW-1813"}],"affected":[{"package":{"name":"io.undertow:undertow-core","ecosystem":"Maven","purl":"pkg:maven/io.undertow/undertow-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"fixed":"2.1.5"}]}],"versions":["2.1.0.Final","2.1.1.Final","2.1.2.Final","2.1.3.Final","2.1.4.Final"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/02/GHSA-rhcw-wjcm-9h6g/GHSA-rhcw-wjcm-9h6g.json"}},{"package":{"name":"io.undertow:undertow-core","ecosystem":"Maven","purl":"pkg:maven/io.undertow/undertow-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.33"}]}],"versions":["1.0.0.Alpha1","1.0.0.Alpha10","1.0.0.Alpha11","1.0.0.Alpha12","1.0.0.Alpha13","1.0.0.Alpha14","1.0.0.Alpha15","1.0.0.Alpha16","1.0.0.Alpha17","1.0.0.Alpha18","1.0.0.Alpha19","1.0.0.Alpha2","1.0.0.Alpha20","1.0.0.Alpha21","1.0.0.Alpha22","1.0.0.Alpha3","1.0.0.Alpha4","1.0.0.Alpha5","1.0.0.Alpha6","1.0.0.Alpha7","1.0.0.Alpha8","1.0.0.Alpha9","1.0.0.Beta1","1.0.0.Beta10","1.0.0.Beta11","1.0.0.Beta12","1.0.0.Beta13","1.0.0.Beta14","1.0.0.Beta15","1.0.0.Beta16","1.0.0.Beta17","1.0.0.Beta18","1.0.0.Beta19","1.0.0.Beta2","1.0.0.Beta20","1.0.0.Beta21","1.0.0.Beta22","1.0.0.Beta23","1.0.0.Beta24","1.0.0.Beta25","1.0.0.Beta26","1.0.0.Beta27","1.0.0.Beta28","1.0.0.Beta29","1.0.0.Beta3","1.0.0.Beta30","1.0.0.Beta31","1.0.0.Beta32","1.0.0.Beta33","1.0.0.Beta4","1.0.0.Beta5","1.0.0.Beta6","1.0.0.Beta7","1.0.0.Beta8","1.0.0.Beta9","1.0.0.CR1","1.0.0.CR2","1.0.0.CR3","1.0.0.CR4","1.0.0.CR5","1.0.0.Final","1.0.1.Final","1.0.10.Final","1.0.11.Final","1.0.12.Final","1.0.13.Final","1.0.14.Final","1.0.15.Final","1.0.16.Final","1.0.17.Final","1.0.18.Final","1.0.19.Final","1.0.2.Final","1.0.3.Final","1.0.4.Final","1.0.5.Final","1.0.6.Final","1.0.7.Final","1.0.8.Final","1.0.9.Final","1.1.0.Beta1","1.1.0.Beta2","1.1.0.Beta3","1.1.0.Beta4","1.1.0.Beta5","1.1.0.Beta6","1.1.0.Beta7","1.1.0.Beta8","1.1.0.CR1","1.1.0.CR2","1.1.0.CR3","1.1.0.CR4","1.1.0.CR5","1.1.0.CR6","1.1.0.CR7","1.1.0.CR8","1.1.0.Final","1.1.1.Final","1.1.2.Final","1.1.3.Final","1.1.4.Final","1.1.5.Final","1.1.6.Final","1.1.7.Final","1.1.8.Final","1.1.9.Final","1.2.0.Beta1","1.2.0.Beta10","1.2.0.Beta2","1.2.0.Beta3","1.2.0.Beta4","1.2.0.Beta5","1.2.0.Beta6","1.2.0.Beta7","1.2.0.Beta8","1.2.0.Beta9","1.2.0.CR1","1.2.0.Final","1.2.1.Final","1.2.10.Final","1.2.11.Final","1.2.12.Final","1.2.2.Final","1.2.3.Final","1.2.4.Final","1.2.5.Final","1.2.6.Final","1.2.7.Final","1.2.8.Final","1.2.9.Final","1.3.0.Beta1","1.3.0.Beta10","1.3.0.Beta11","1.3.0.Beta12","1.3.0.Beta13","1.3.0.Beta2","1.3.0.Beta3","1.3.0.Beta4","1.3.0.Beta5","1.3.0.Beta6","1.3.0.Beta7","1.3.0.Beta8","1.3.0.Beta9","1.3.0.CR1","1.3.0.CR2","1.3.0.CR3","1.3.0.Final","1.3.1.Final","1.3.10.Final","1.3.11.Final","1.3.12.Final","1.3.13.Final","1.3.14.Final","1.3.15.Final","1.3.16.Final","1.3.17.Final","1.3.18.Final","1.3.19.Final","1.3.2.Final","1.3.20.Final","1.3.21.Final","1.3.22.Final","1.3.23.Final","1.3.24.Final","1.3.25.Final","1.3.26.Final","1.3.27.Final","1.3.28.Final","1.3.29.Final","1.3.3.Final","1.3.30.Final","1.3.31.Final","1.3.32.Final","1.3.33.Final","1.3.4.Final","1.3.5.Final","1.3.6.Final","1.3.7.Final","1.3.8.Final","1.3.9.Final","1.4.0.Beta1","1.4.0.CR1","1.4.0.CR2","1.4.0.CR3","1.4.0.CR4","1.4.0.Final","1.4.1.Final","1.4.10.Final","1.4.11.Final","1.4.12.Final","1.4.13.Final","1.4.14.Final","1.4.15.Final","1.4.16.Final","1.4.17.Final","1.4.18.Final","1.4.19.Final","1.4.2.Final","1.4.20.Final","1.4.21.Final","1.4.22.Final","1.4.23.Final","1.4.24.Final","1.4.25.Final","1.4.26.Final","1.4.27.Final","1.4.28.Final","1.4.3.Final","1.4.4.Final","1.4.5.Final","1.4.6.Final","1.4.7.Final","1.4.8.Final","1.4.9.Final","2.0.0.Alpha1","2.0.0.Beta1","2.0.0.Final","2.0.1.Final","2.0.10.Final","2.0.11.Final","2.0.12.Final","2.0.13.Final","2.0.14.Final","2.0.15.Final","2.0.16.Final","2.0.17.Final","2.0.18.Final","2.0.19.Final","2.0.2.Final","2.0.20.Final","2.0.21.Final","2.0.22.Final","2.0.23.Final","2.0.24.Final","2.0.25.Final","2.0.26.Final","2.0.27.Final","2.0.28.Final","2.0.29.Final","2.0.3.Final","2.0.30.Final","2.0.31.Final","2.0.32.Final","2.0.4.Final","2.0.5.Final","2.0.6.Final","2.0.7.Final","2.0.8.Final","2.0.9.Final"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/gith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