Re: Permissions for Newly Created User

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
Cc: sreekanta reddy <sreekantareddy18(at)gmail(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: Permissions for Newly Created User
Date: 2024-10-18 16:44:26
Message-ID: 894610.1729269866@sss.pgh.pa.us
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Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> writes:
> On Fri, 2024-10-18 at 15:41 +0530, sreekanta reddy wrote:
>> When creating or altering a user's password, the log file captures the password in plain text format, which could be a potential security risk.
>> However, when using the \password command in psql, the password is logged in its hashed format (SHA-256), which is a more secure practice.
>> I recommend extending this hashed logging format to all password creation and modification operations.

> You mean to hash it just for logging?

> After you sent it to the server in clear text, so that the DBA could capture it with an
> event trigger? Where is the point? The log file is to be treated as sensitive data.

Yeah. To enlarge on that: if you are capturing SQL commands in the
log file, they most likely contain all kinds of sensitive data ---
think credit card numbers, bank account numbers, HIPAA-protected
medical details, yadda yadda. Most of that, the database has no idea
whether it's sensitive, so "please hide sensitive data in the log" is a
non-starter. You have to guard the postmaster log about as carefully
as you guard the database contents.

regards, tom lane

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