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Date: Fri, 5 Dec 2014 16:04:04 +0000
From: Steve Kemp <steve@...ve.org.uk>
To: oss-security@...ts.openwall.com
Subject: Re: CVE Request - dns-sync node module


  This never did receive an allocation, did it?

On Tue Nov 11, 2014 at 20:02:40 +0000, Steve Kemp wrote:
> 
>   The dns-sync library for node.js allows resolving hostnames in
>  a synchronous fashion
> 
>   All versions of dns-sync prior to the release 0.1.1 were
>  vulnerable to arbitrary command execution via maliciously
>  formed hostnames.  For example:
> 
>     var dnsSync = require('dns-sync');
>     console.log(dnsSync.resolve('$(id > /tmp/foo)'));
> 
>   This is caused by the hostname being passed through a shell
>  as part of a command execution.
> 
>   I disclosed/reported this here:
> 
>         https://github.com/skoranga/node-dns-sync/issues/1
> 
>   The following commit resolves the bug:
> 
>         https://github.com/skoranga/node-dns-sync/commit/d9abaae384b198db1095735ad9c1c73d7b890a0d


Steve
--
Git-based DNS hosting
https://dns-api.com/

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