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Revert MAINTAIN privilege and pg_maintain predefined role.

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This reverts the following commits: 4dbdb82513, c2122aae63,
5b1a879943, 9e1e9d6560, ff9618e82a, 60684dd834, 4441fc704d,
and b5d6382496.  A role with the MAINTAIN privilege may be able to
use search_path tricks to escalate privileges to the table owner.
Unfortunately, it is too late in the v16 development cycle to apply
the proposed fix, i.e., restricting search_path when running
maintenance commands.

Bumps catversion.

Reviewed-by: Jeff Davis
Discussion: https://postgr.es/m/E1q7j7Y-000z1H-Hr%40gemulon.postgresql.org
Backpatch-through: 16
This commit is contained in:
Nathan Bossart
2023-07-07 11:25:13 -07:00
parent ec99d6e9c8
commit 151c22deee
41 changed files with 179 additions and 445 deletions
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11
src/test/perl/PostgreSQL/Test/AdjustUpgrade.pm
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@@ -274,17 +274,6 @@ sub adjust_old_dumpfile
$dump = _mash_view_qualifiers($dump);
}
if ($old_version >= 14 && $old_version < 16)
{
# Fix up some privilege-set discrepancies.
$dump =~
s {^REVOKE SELECT,INSERT,REFERENCES,DELETE,TRIGGER,TRUNCATE,UPDATE ON TABLE}
{REVOKE ALL ON TABLE}mg;
$dump =~
s {^(GRANT SELECT,INSERT,REFERENCES,TRIGGER,TRUNCATE),UPDATE ON TABLE}
{$1,MAINTAIN,UPDATE ON TABLE}mg;
}
if ($old_version < 14)
{
# Remove mentions of extended hash functions.