{"id":"CVE-2017-7559","state":"PUBLISHED","title":"In Undertow 2.x before 2.0.0.Alpha2, 1.4.x before 1.4.17.Final, and 1.3.x before 1.3.31.Final, it was found that the fix for CVE-2017-2666 was incomplete and invalid characters are","description":"In Undertow 2.x before 2.0.0.Alpha2, 1.4.x before 1.4.17.Final, and 1.3.x before 1.3.31.Final, it was found that the fix for CVE-2017-2666 was incomplete and invalid characters are still allowed in the query string and path parameters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.","publishedAt":"2018-01-10T15:00:00.000Z","updatedAt":"2024-09-16T19:56:46.618Z","severity":null,"assigner":"redhat","products":["Red Hat, Inc. undertow"],"affected":[{"vendor":"Red Hat, Inc.","product":"undertow","versions":[{"version":"2.x before 2.0.0.Alpha2","status":"affected"},{"version":"1.4.x before 1.4.17.Final","status":"affected"},{"version":"1.3.x before 1.3.31.Final","status":"affected"}]}],"references":["https://access.redhat.com/errata/RHSA-2018:1322","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7559","https://access.redhat.com/errata/RHSA-2018:0002","https://access.redhat.com/errata/RHSA-2017:3458","https://issues.jboss.org/browse/UNDERTOW-1251","https://access.redhat.com/errata/RHSA-2018:0004","https://access.redhat.com/errata/RHSA-2017:3455","https://access.redhat.com/errata/RHSA-2017:3456","https://access.redhat.com/errata/RHSA-2018:0003","https://access.redhat.com/errata/RHSA-2018:0005","https://access.redhat.com/errata/RHSA-2017:3454"],"weaknesses":["CWE-444"],"ingestedAt":"2026-10-29T19:43:54.997Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2017/7xxx/CVE-2017-7559.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2017-7559","state":"PUBLISHED","datePublished":"2018-01-10T15:00:00.000Z","dateUpdated":"2024-09-16T19:56:46.618Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2017-04-05T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In Undertow 2.x before 2.0.0.Alpha2, 1.4.x before 1.4.17.Final, and 1.3.x before 1.3.31.Final, it was found that the fix for CVE-2017-2666 was incomplete and invalid characters are still allowed in the query string and path parameters. 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