Maybe it's time to get rid of tcpwrappers/tcpd?

[Florian Weimer]

On 03/24/2014 01:23 PM, Reindl Harald wrote:

>> It's still very difficult to securely process uploaded files under a different user account.  Some SFTP clients set
>> restrictive permissions on upload, and the OpenSSH implementation does not allow to bypass that.
>
> man umask
>
> [root at rh:/downloads]$ cat /etc/ssh/sshd_config  | grep internal-sftp
> Subsystem sftp internal-sftp -u 006

umask doesn't apply to explicit chmod.

-- 
Florian Weimer / Red Hat Product Security Team