RHSA-2021:2104: Moderate: rh-ruby25-ruby security, bug fix, and enhancement 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-ruby25-ruby (2.5.9). (BZ#1952998)<br>Security Fix(es):<br><li> ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch? (CVE-2019-15845)</li> <li> ruby: Regular expression denial of service vulnerability of WEBrick's Digest authentication (CVE-2019-16201)</li> <li> ruby: Code injection via command argument of Shell#test / Shell#[] (CVE-2019-16255)</li> <li> rubygem-json: Unsafe object creation vulnerability in JSON (CVE-2020-10663)</li> <li> ruby: BasicSocket#readnonblock method leads to information disclosure (CVE-2020-10933)</li> <li> ruby: Potential HTTP request smuggling in WEBrick (CVE-2020-25613)</li> <li> ruby: XML round-trip vulnerability in REXML (CVE-2021-28965)</li> <li> ruby: HTTP response splitting in WEBrick (CVE-2019-16254)</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.<br>Bug Fix(es):<br><li> rh-ruby25-ruby: Resolv::DNS: timeouts if multiple IPv6 name servers are given and address contains leading zero [rhscl-3] (BZ#1953001)</li>