Re: Application name patch - v2

On Mon, Oct 19, 2009 at 9:23 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
> 2009/10/19 Dave Page <dpage(at)pgadmin(dot)org>:
>> On Mon, Oct 19, 2009 at 8:54 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>>> I dislike write access to app name guc for user too. It's not safe.
>>> Maybe only super user can do it?
>>
>> That'll render it pretty useless, as most applications wouldn't then
>> be able to set/reset it when it makes sense to do so.
>
> But application can do it simply via connection string, no? Mostly
> applications has connection string in configuration, so I don't see
> problem there. And if I would to allow access, then I could to wrap
> setting to security definer function.

It will prevent an application changing the value before running a
long operation which may warrant special identification. It will also
prevent applications changing the setting if you're running through a
pooler.

> I see this as security hole. It allows special SQL injection.

How so?

--
Dave Page
EnterpriseDB UK: http://www.enterprisedb.com