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From: Laurenz Albe <[email protected]>
To: Priancka Chatz <[email protected]>
Cc: pgsql-admin <[email protected]>
Subject: Re: Unknown temp directories and library files
Date: Fri, 11 Oct 2024 22:16:39 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <CANnOdgYuaUxnx2XwDek3ZQYK0OiO_XniVNhKB-Ezfz6TRANGtQ@mail.gmail.com>
References: <CANnOdgb=p9mLcg=5BMJ76yEZ+RYR7WHgS1VJRf8EY5VvOcf3ng@mail.gmail.com>
	<[email protected]>
	<CANnOdgYuaUxnx2XwDek3ZQYK0OiO_XniVNhKB-Ezfz6TRANGtQ@mail.gmail.com>

On Fri, 2024-10-11 at 15:47 +0200, Priancka Chatz wrote:
> On Fri, Oct 11, 2024 at 3:09 PM Laurenz Albe <[email protected]> wrote:
> > On Thu, 2024-10-10 at 12:22 +0200, Priancka Chatz wrote:
> > > I am observing a new/unknown behavior on some of my instances. My postgres Data
> > > directory path is /home/postgres/pgdata/pgroot/data. And I see a temp directory
> > > present inside /home/postgres/pgdata which has 100s of directory underneath it
> > > and inside each directory some library files related to Psycopg2. Not sure what
> > > these files are and why it is getting created. I am attaching screenshots for reference.
> > > Can anyone shed some light or direct me to any links to troubleshoot this?
> > 
> > I'd say somebody broke into your database and is abusing it for his purposes.
> > 
> > If that proves true, rescue what you can of the data and start with a new
> > installation, preferably with better security.

I have no conclusive proof for abuse, but a library has no business in "pgsql_tmp".
That looks very much like somebody guessed your superuser password and is hijacking
the operating system account.

Is that by any event a database accessible on the internet?  Did you have a really
secure password?

Yours,
Laurenz Albe

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