{"id":"CVE-2017-2666","state":"PUBLISHED","title":"It was discovered in Undertow that the code that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted","description":"It was discovered in Undertow that the code that parsed the HTTP request line permitted invalid characters. 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":"2018-07-27T14:00:00.000Z","updatedAt":"2024-08-05T14:02:07.176Z","severity":{"score":6.5,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","source":"redhat"},"assigner":"redhat","products":["[UNKNOWN] undertow"],"affected":[{"vendor":"[UNKNOWN]","product":"undertow","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://access.redhat.com/errata/RHSA-2017:1411","http://rhn.redhat.com/errata/RHSA-2017-1409.html","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2666","https://www.debian.org/security/2017/dsa-3906","https://access.redhat.com/errata/RHSA-2017:3458","https://access.redhat.com/errata/RHSA-2017:1410","https://access.redhat.com/errata/RHSA-2017:1412","https://access.redhat.com/errata/RHSA-2017:3455","https://access.redhat.com/errata/RHSA-2017:3456","http://www.securityfocus.com/bid/98966","https://access.redhat.com/errata/RHSA-2017:3454"],"weaknesses":["CWE-444"],"ingestedAt":"2026-10-29T19:43:39.462Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2017/2xxx/CVE-2017-2666.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2017-2666","state":"PUBLISHED","datePublished":"2018-07-27T14:00:00.000Z","dateUpdated":"2024-08-05T14:02:07.176Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2016-12-01T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"It was discovered in Undertow that the code that parsed the HTTP request line permitted invalid characters. 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