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Ramesh Damodaran and Aliaksandr Shubnik , engineers at Infoblox , a Silicon Valley firm that does DNS , DHCP and IP management , uncovered the vulnerability and reported it to the ISC .
 Aliaksandr Shubnik: discoverer; Ramesh Damodaran: discoverer; the vulnerability: vulnerability; engineers: discoverer; Infoblox: discoverer; a Silicon Valley firm: discoverer
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:
 Aliaksandr Shubnik: discoverer; Ramesh Damodaran: discoverer; the vulnerability: vulnerability; engineers: discoverer; Infoblox: discoverer; a Silicon Valley firm: discoverer