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As part of Unit 42 ’s ongoing threat research , we can now disclose that Palo Alto Networks Unit 42 researchers have discovered two code execution vulnerabilities affecting Adobe Flash ( APSB17 - 04 ) that were addressed in Adobe ’s monthly security update release : For current customers with a Threat Prevention subscription , Palo Alto Networks has also released IPS signatures providing proactive protection from these vulnerabilities .
 Palo Alto Networks Unit 42 researchers: discoverer; two code execution vulnerabilities: vulnerability
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:
 Palo Alto Networks Unit 42 researchers: discoverer; two code execution vulnerabilities: vulnerability