| From: | Peter Smith <smithpb2250(at)gmail(dot)com> |
|---|---|
| To: | YeXiu <1518981153(at)qq(dot)com> |
| Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Feature Recommendations for Logical Subscriptions |
| Date: | 2025-04-10 22:10:12 |
| Message-ID: | CAHut+Ps-fWX+L=oGidXFxpBf532Zk18Ju9wvZqpbdi=5pp9BBg@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi,
FYI, the Column List documentation [1] says
------
However, do not rely on this feature for security: a malicious
subscriber is able to obtain data from columns that are not
specifically published. If security is a consideration, protections
can be applied at the publisher side.
------
IIRC, this was something to do with how the COPY done by the initial
table sync might be manipulated by a malicious subscriber. I think you
can find more details about this in the original thread when Column
Lists were introduced. e.g. try searching this [2] thread for the word
"security".
======
[1] https://www.postgresql.org/docs/current/logical-replication-col-lists.html
[2] https://www.postgresql.org/message-id/flat/CAH2L28vddB_NFdRVpuyRBJEBWjz4BSyTB%3D_ektNRH8NJ1jf95g%40mail.gmail.com
Kind Regards,
Peter Smith.
Fujitsu Australia
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