Deserialization of Untrusted Data
RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the
gem owner command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6.
All versions before 188.8.131.52
Upgrade to version 184.108.40.206 or above.