RHSA-2021:3559: Important: rh-ruby27-ruby security update

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. <br>The following packages have been upgraded to a later upstream version: rh-ruby27-ruby (2.7.4).<br>Security Fix(es):<br><li> rubygem-bundler: Dependencies of gems with explicit source may be installed from a different source (CVE-2020-36327)</li> <li> rubygem-rdoc: Command injection vulnerability in RDoc (CVE-2021-31799)</li> <li> ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host (CVE-2021-31810)</li> <li> ruby: StartTLS stripping vulnerability in Net::IMAP (CVE-2021-32066)</li> For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.