{"id":"DEBIAN-CVE-2017-7559","details":"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.","modified":"2026-07-28T05:48:03.309752037Z","published":"2018-01-10T15:29:00.317Z","upstream":["CVE-2017-7559"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2017-7559"}],"affected":[{"package":{"name":"undertow","ecosystem":"Debian:14","purl":"pkg:deb/debian/undertow?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.23-1"}]}],"versions":["1.3.11-1","1.3.16-1","1.3.19-1","1.3.21-1","1.3.23-1","1.3.4-1","1.3.5-1","1.3.7-1","1.4.0-1","1.4.1-1","1.4.18-1","1.4.20-1","1.4.21-1","1.4.21-2","1.4.22-1","1.4.3-1","1.4.4-1","1.4.6-1","1.4.7-1","1.4.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2017-7559.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}