The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.

The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.

ruby: Buffer underrun vulnerability in Kernel.sprintf rubygems: Escape sequence in the "summary" field of gemspec rubygems: No size limit in summary length of gem spec rubygems: Arbitrary file overwrite due to incorrect validation of specification name rubygems: DNS hijacking vulnerability rubygems: Unsafe object deserialization through YAML formatted gem specifications ruby: Escape sequence injection vulnerability in the Basic authentication of WEBrick ruby: Buffer underrun in OpenSSL ASN1 decode ruby: Arbitrary heap exposure during a JSON.generate call ruby: Command injection vulnerability in Net::FTP ruby: Command injection in lib/resolv.rb:lazy_initialize() allows arbitrary code execution

ruby: dlopen could open a library with tainted library name ruby: dlopen could open a library with tainted library name ruby: Buffer underrun vulnerability in Kernel.sprintf rubygems: Escape sequence in the "summary" field of gemspec rubygems: No size limit in summary length of gem spec rubygems: Arbitrary file overwrite due to incorrect validation of specification name rubygems: DNS hijacking vulnerability rubygems: Unsafe object deserialization through YAML formatted gem specifications ruby: Escape sequence injection vulnerability in the Basic authentication of WEBrick ruby: Buffer underrun in OpenSSL ASN1 decode ruby: Arbitrary heap exposure during a JSON.generate call ruby: Command injection vulnerability in Net::FTP ruby: Command injection in lib/resolv.rb:lazy_initialize() allows arbitrary code execution

Security update for ruby2.1

Affected: Ubuntu:14.04:LTS: ruby1.9.1, Ubuntu:16.04:LTS: ruby2.3

The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.