TITLE: Remote command Injection in Creme Fraiche 0.6 Ruby Gem DATE: 5/14/2013 AUTHOR: Larry W. Cashdollar (@_larry0) DOWNLOAD: http://rubygems.org/gems/cremefraiche, http://www.uplawski.eu/technology/cremefraiche/ DESCRIPTION: Converts Email to PDF files. VENDOR: Notifed on 5/13/2013, provided fix 5/14/2013 FIX: In Version 0.6.1 CVE: TBD (please assign?) DETAILS: The following lines pass unsanitized user input directly to the command line. A malicious email attachment with a file name consisting of shell metacharacters could inject commands into the shell. If the attacker is allowed to specify a filename (via a web gui) commands could be injected that way as well. 218 cmd = "pdftk %s updateinfo %s output %s" %[pdf, infofile, tfile] 219 @log.debug('pdftk-command is ' << cmd) 220 pdftkresult = system( cmd) GREETINGS: @vladz,@quine,@BrandonTansey,@sushidude,@jkouns,@sub_space and @attritionorg ADVISORY: http://vapid.dhs.org/advisories/cremefraiche-cmd-inj.html