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Message-ID: <CADZCc7eWUmZhzD+3BsEqoYKoRTfXXVcTygaBLhwUph1z=fO80w@mail.gmail.com>
Date: Mon, 9 Nov 2015 13:52:55 +0000
From: Pedro Vaz De Sousa Grilo <pedrosousagrilo@...il.com>
To: oss-security@...ts.openwall.com
Subject: Re: Assign CVE for common-collections remote code
execution on deserialisation flaw
I think it is. You can execute remote code by exploiting HTTP, RMI and JMI
On Mon, Nov 9, 2015 at 6:58 AM, Florian Weimer <fweimer@...hat.com> wrote:
> On 11/09/2015 01:36 AM, Jason Shepherd wrote:
> > Hello oss-esc,
> >
> > It was found that a flaw in Apache commons-collections Java library
> allowed remote code execution when Deserialised with Java Object
> Serialization.
>
> This is not a vulnerability in the library. How can this feature allow
> remote code execution if it does not involve any networking at all?
>
> The root cause is the incorrect use of Java deserialization. As long as
> you do not fix that, something else on the classpath will serve the role
> of Apache Commons Collections.
>
> Disabling InvokerTransformer deserialization may be a prudent hardening
> measure, but calling the existing behavior a vulnerability is a bit of a
> stretch.
>
> Florian
>
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