Newlines in headers, which could lead to header injection attacks.

• https://metacpan.org/changes/distribution/CGI-Simple

Non-random multipart boundary.

• https://metacpan.org/changes/distribution/CGI-Simple

The multipart_init function in (1) CGI.pm before 3.50 and (2) Simple.pm in CGI::Simple 1.112 and earlier uses a hardcoded value of the MIME boundary string in multipart/x-mixed-replace content, which allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via crafted input that contains this value, a different vulnerability than CVE-2010-3172.

• https://github.com/AndyA/CGI--Simple/commit/e4942b871a26c1317a175a91ebb7262eea59b380
• http://cpansearch.perl.org/src/LDS/CGI.pm-3.50/Changes
• http://openwall.com/lists/oss-security/2010/12/01/1
• http://www.nntp.perl.org/group/perl.perl5.changes/2010/11/msg28043.html
• http://perl5.git.perl.org/perl.git/blobdiff/a0b94c2432b1d8c20653453a0f6970cb10f59aec..84601d63a7e34958da47dad1e61e27cb3bd467d1:/cpan/CGI/lib/CGI.pm
• http://perl5.git.perl.org/perl.git/commit/84601d63a7e34958da47dad1e61e27cb3bd467d1
• http://openwall.com/lists/oss-security/2010/12/01/2
• http://openwall.com/lists/oss-security/2010/12/01/3
• https://bugzilla.mozilla.org/show_bug.cgi?id=600464
• http://osvdb.org/69588
• http://osvdb.org/69589
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:237
• http://www.vupen.com/english/advisories/2011/0076
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:250
• http://secunia.com/advisories/42877
• https://bugzilla.mozilla.org/show_bug.cgi?id=591165
• http://www.vupen.com/english/advisories/2011/0207
• http://www.bugzilla.org/security/3.2.9/
• http://secunia.com/advisories/43033
• http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053591.html
• http://secunia.com/advisories/43147
• http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053576.html
• http://www.vupen.com/english/advisories/2011/0249
• http://www.vupen.com/english/advisories/2011/0271
• http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053678.html
• http://www.vupen.com/english/advisories/2011/0212
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
• http://secunia.com/advisories/43165
• http://secunia.com/advisories/43068
• http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053665.html
• http://www.redhat.com/support/errata/RHSA-2011-1797.html
• http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10735
• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705

CGI::Simple versions before 1.282 for Perl has a HTTP response splitting flaw This vulnerability is a confirmed HTTP response splitting flaw in CGI::Simple that allows HTTP response header injection, which can be used for reflected XSS or open redirect under certain conditions. Although some validation exists, it can be bypassed using URL-encoded values, allowing an attacker to inject untrusted content into the response via query parameters. As a result, an attacker can inject a line break (e.g. %0A) into the parameter value, causing the server to split the HTTP response and inject arbitrary headers or even an HTML/JavaScript body, leading to reflected cross-site scripting (XSS), open redirect or other attacks. The issue documented in CVE-2010-4410 https://www.cve.org/CVERecord?id=CVE-2010-4410 is related but the fix was incomplete. Impact By injecting %0A (newline) into a query string parameter, an attacker can: * Break the current HTTP header * Inject a new header or entire body * Deliver a script payload that is reflected in the server’s response That can lead to the following attacks: * reflected XSS * open redirect * cache poisoning * header manipulation

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2320
• https://datatracker.ietf.org/doc/html/rfc7230#section-3
• https://metacpan.org/release/MANWAR/CGI-Simple-1.281/diff/MANWAR/CGI-Simple-1.282/lib/CGI/Simple.pm
• https://metacpan.org/release/MANWAR/CGI-Simple-1.281/source/lib/CGI/Simple.pm#L1031-1035
• https://owasp.org/www-community/attacks/HTTP_Response_Splitting
• https://rt.perl.org/Public/Bug/Display.html?id=21951