full-disclosure - Command injection vulnerability in Ruby Gem sprout 0.7.246

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-id: <2722ED66-88FE-480B-8ACC-CC402F5C40DE@me.com>
Date: Mon, 02 Dec 2013 18:51:35 -0500
From: "Larry W. Cashdollar" <larry0@...com>
To: full <full-disclosure@...ts.grok.org.uk>
Subject: Command injection vulnerability in Ruby Gem
	sprout 0.7.246

Title: Command injection vulnerability in Ruby Gem sprout 0.7.246

Download: http://rubygems.org/gems/sprout, http://projectsprouts.org/

Vulnerability:

The unpack_zip() function contains the following code:

sprout-0.7.246/lib/sprout/archive_unpacker.rb

60           zip_dir = File.expand_path(File.dirname(zip_file))
61           zip_name = File.basename(zip_file)
62           output = File.expand_path(dir)
63           # puts ">> zip_dir: #{zip_dir} zip_name: #{zip_name} output: #{output}    "     
64           %x(cd #{zip_dir};unzip #{zip_name} -d #{output})

If the attacker can control zip_dir, zip_name or output then they can possibly 
execute shell commands by injecting shell meta characters as input. 

PoC:

For example: filename;id;.zip

I contacted the developer a few weeks ago but received no response.

Thanks!
Larry W. Cashdollar
@_larry0
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/