full-disclosure - Re: vsFTPd remote code execution

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Message-ID: <CAFB=mGDwnvVky6dUX9Xd1rcuakma9YfCW-iPKCpsraBNw-WoRg@mail.gmail.com>
Date: Tue, 13 Dec 2011 21:11:25 +0100
From: "HI-TECH ." <isowarez.isowarez.isowarez@...glemail.com>
To: Dan Rosenberg <dan.j.rosenberg@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: vsFTPd remote code execution

Yes you are somewhat right, as this is the old discussion about if
code execution inside an ftpd
is a vulnerability itself or only local code execution. I have the
opinion that an ftpd which does not allow to run code
should restrict the user so, and if there is a way to execute code it
it is a vulnerability.
Take the example of a vsftpd configured for anonymous ftp and write
access in /var/ftp. The attacker might
execute code using the vulnerability without authentication
credentials, or for example an attacker only has
access to a user account configured for ftp.
Basically you are right, vsftpd uses privsep so its a not so risky
vulnerability.

/Kingcope

Am 13. Dezember 2011 20:56 schrieb Dan Rosenberg <dan.j.rosenberg@...il.com>:
>> Anyone with an up2date linux local root which only makes use of syscalls? :>
>>
>
> This is all fun stuff, and definitely worth looking into further, but
> if you've got a local kernel exploit that you can trigger from inside
> vsftpd, you don't need this (potential) vulnerability in vsftpd - you
> already win.
>
> -Dan

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