New sig for detecting Ubiquiti Networks UniFi Cloud Key Firm v0.6.1 Host RCE

[rmkml <rmkml () ligfy org>]

Hi,

Please check a new sig for detecting Ubiquiti Networks UniFi Cloud Key Firm v0.6.1 Host Remote Command Execution 
attempt:

alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"WEB-MISC Ubiquiti Networks UniFi Cloud Key Firm v0.6.1 Host Remote Command 
Execution attempt"; flow:to_server,established; content:"GET"; nocase; http_method; content:"Host|3a|"; nocase; http_header; content:"|3b|"; 
http_header; within:50; distance:0; pcre:"/^Host\x3a[^\n]{0,50}?\x3b/Hmi"; reference:url,cxsecurity.com/issue/WLB-2017080038; 
classtype:web-application-attack; sid:1; rev:1;)

Don't forget check variables.

Please send any comments.

Regards
@Rmkml
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