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Date: Tue, 14 May 2013 16:59:57 +0000 (GMT)
From: "Larry W. Cashdollar" <larry0@...com>
To: Open Source Security <oss-security@...ts.openwall.com>
Subject: Remote command Injection in Creme Fraiche 0.6 Ruby Gem
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
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