Они только умолчали о том, что в продаваемом Легеровым пакете эксплойтов есть
0-day эксплойт для ProFTPD
> ----------------------------------------------------------------------
>
> TITLE:
> ProFTPD Unspecified Vulnerability
>
> SECUNIA ADVISORY ID:
> SA22803
>
> VERIFY ADVISORY:
> http://secunia.com/advisories/22803/
>
> CRITICAL:
> Moderately critical
>
> IMPACT:
> System access
>
> WHERE:
> From remote
>
> SOFTWARE:
> ProFTPD 1.3.x
> http://secunia.com/product/5430/
>
> DESCRIPTION:
> Evgeny Legerov has reported a vulnerability in ProFTPD, which
> potentially can be exploited by malicious people to compromise a
> vulnerable system.
>
> The vulnerability is caused due to an unspecified error.
>
> Successful exploitation may allow execution of arbitrary code.
>
> The vulnerability is reported in version 1.3.0. Other versions may
> also be affected.
>
> SOLUTION:
> Restrict access to the service.
>
> PROVIDED AND/OR DISCOVERED BY:
> Evgeny Legerov, GLEG Ltd.
>