lib/thumbshooter.rb in the Thumbshooter 0.1.5 gem for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in a URL.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-1898
• http://seclists.org/fulldisclosure/2013/Mar/218
• http://vapid.dhs.org/advisories/thumbshooter-ruby-gem-remoteexec.html
• http://www.openwall.com/lists/oss-security/2013/03/26/13
• http://www.openwall.com/lists/oss-security/2013/03/26/3
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/thumbshooter/CVE-2013-1898.yml