{"id":"UBUNTU-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":"2026-04-02T18:03:28.350594Z","published":"2018-01-10T15:29:00Z","upstream":["CVE-2017-7559"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-7559"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-7559"}],"affected":[{"package":{"name":"undertow","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/undertow@1.3.16-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.4-1","1.3.5-1","1.3.7-1","1.3.11-1","1.3.16-1","1.3.16-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libundertow-java","binary_version":"1.3.16-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-7559.json"}},{"package":{"name":"undertow","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/undertow@2.3.8-2ubuntu0.1~esm1?arch=source&distro=esm-apps/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.8-2","2.3.8-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libundertow-java","binary_version":"2.3.8-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-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"},{"type":"Ubuntu","score":"medium"}]}