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Users of open source webmail software SquirrelMail are open to remote code execution due to a bug ( CVE -2017-7692 ) discovered independently by two researchers .
 a bug: vulnerability; CVE -2017-7692: common vulnerabilities and exposures; two researchers: 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:
 a bug: vulnerability; CVE -2017-7692: common vulnerabilities and exposures; two researchers: discoverer