697
Beer posted a blog about several vulnerabilities in iOS 7 he found in 2014 that share commonalities with several bugs he has found in iOS 11.4.1 , some of which he 's now released exploits for .
 Beer: discoverer; several vulnerabilities: vulnerability; iOS 7: vulnerable system
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: discover vulnerability 
  Option: vulnerable system owner, vulnerability, capabilities, time, vulnerable system version, discoverer, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 Beer: discoverer; several vulnerabilities: vulnerability; iOS 7: vulnerable system