Dancer2 versions before 2.2.0 for Perl do not strip CR and LF from response header names in headers_to_array.<\/p>\n
The routine removes CR and LF from each header value but not from the name. A name carrying them therefore reaches the PSGI server intact. A server that does not validate keys writes it to the wire, so the bytes after the CRLF arrive as their own header line.<\/p>\n
The application has to derive the header name from request data, not just the value.<\/p>\n
An attacker who controls that data adds their own headers and splits the response.<\/p>\n","protected":false},"excerpt":{"rendered":"
Dancer2 versions before 2.2.0 for Perl do not strip CR and LF from response header names in headers_to_array.<\/p>\n
The routine removes CR and LF from each header value but not from the name. A name carryi<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-27374","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/27374","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}