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.
problem types: CWE-444
affected:
{
product: undertow
vendor: Red Hat, Inc.
versions:
status: affected, 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
}