Node.js before 4.8.5, 6.x before 6.11.5, and 8.x before 8.8.0 allows remote attackers to cause a denial of service (uncaught exception and crash) by leveraging a change in the zlib module 1.2.9 making 8 an invalid value for the windowBits parameter.Referenceshttp://www.securityfocus.com/bid/101881https://nodejs.org/en/blog/vulnerability/oct-2017-dos/https://nodejs.org/en/blog/release/v8.8.0/https://nodejs.org/en/blog/release/v6.11.5/https://nodejs.org/en/blog/release/v4.8.5/