full-disclosure - Re: SolusVM WHMCS module privilege escalation, also libcurl vuln?

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Message-ID: <CAH72viiWrZub8RdN5Q5BLB4jy1ozgyuTaAGhh1D61kHrrsS1bQ@mail.gmail.com>
Date: Mon, 24 Jun 2013 15:05:56 +0200
From: Źmicier Januszkiewicz <gauri@....by>
To: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: Re: SolusVM WHMCS module privilege escalation,
 also libcurl vuln?

Why, hello there.

> it appears to be a result of a vulnerability - or at the very least
weakness - in the implementation of libcurl; in particular, weak randomness
in generating the form boundary.

Is the boundary value generation required to be cryptographically strong?
It does not come as a requirement as far as I know.

The application itself has to perform proper input sanitation on ALL of its
inputs coming from outside. For some reason, it is always libraries that
are blamed for application flaws.

2013/6/24 Sven Slootweg <admin@...to.net>

> Ran across a new post on a blog I frequently visit:
> http://localhost.re/p/solusvm-whmcs-module-316-vulnerability
>
> It describes a privilege escalation vulnerability in the WHMCS module for
> SolusVM that basically lets you do anything, but if I'm reading it
> correctly, it appears to be a result of a vulnerability - or at the very
> least weakness - in the implementation of libcurl; in particular, weak
> randomness in generating the form boundary.
>
> Thoughts?
>
> Note: I'm not the author of this exploit (it's actually quite a bit beyond
> my capabilities), I just ran across it and decided to post here since it
> doesn't seem to be discussed anywhere. Just to avoid people making
> incorrect assumptions... again :)
>
> - Sven Slootweg
>
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