8000 Revert MAINTAIN privilege and pg_maintain predefined role. · postgrespro/postgres@151c22d · GitHub
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Revert MAINTAIN privilege and pg_maintain predefined role.
This reverts the following commits: 4dbdb82, c2122aa, 5b1a879, 9e1e9d6, ff9618e, 60684dd, 4441fc7, and b5d6382. 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
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‎doc/src/sgml/ddl.sgml

Lines changed: 9 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -1718,8 +1718,8 @@ ALTER TABLE products RENAME TO items;
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<literal>INSERT</literal>, <literal>UPDATE</literal>, <literal>DELETE</literal>,
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<literal>TRUNCATE</literal>, <literal>REFERENCES</literal>, <literal>TRIGGER</literal>,
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<literal>CREATE</literal>, <literal>CONNECT</literal>, <literal>TEMPORARY</literal>,
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<literal>EXECUTE</literal>, <literal>USAGE</literal>, <literal>SET</literal>,
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<literal>ALTER SYSTEM</literal>, and <literal>MAINTAIN</literal>.
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<literal>EXECUTE</literal>, <literal>USAGE</literal>, <literal>SET</literal>
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and <literal>ALTER SYSTEM</literal>.
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The privileges applicable to a particular
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object vary depending on the object's type (table, function, etc.).
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More detail about the meanings of these privileges appears below.
@@ -2010,19 +2010,7 @@ REVOKE ALL ON accounts FROM PUBLIC;
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</para>
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</listitem>
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</varlistentry>
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<varlistentry id="ddl-priv-maintain">
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<term><literal>MAINTAIN</literal></term>
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<listitem>
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<para>
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Allows <command>VACUUM</command>, <command>ANALYZE</command>,
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<command>CLUSTER</command>, <command>REFRESH MATERIALIZED VIEW</command>,
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<command>REINDEX</command>, and <command>LOCK TABLE</command> on a
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relation.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</variablelist>
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The privileges required by other commands are listed on the
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reference page of the respective command.
@@ -2171,11 +2159,6 @@ REVOKE ALL ON accounts FROM PUBLIC;
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<entry><literal>A</literal></entry>
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<entry><literal>PARAMETER</literal></entry>
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</row>
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<row>
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<entry><literal>MAINTAIN</literal></entry>
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<entry><literal>m</literal></entry>
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<entry><literal>TABLE</literal></entry>
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</row>
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</tbody>
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</tgroup>
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</table>
@@ -2266,7 +2249,7 @@ REVOKE ALL ON accounts FROM PUBLIC;
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</row>
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<row>
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<entry><literal>TABLE</literal> (and table-like objects)</entry>
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<entry><literal>arwdDxtm</literal></entry>
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<entry><literal>arwdDxt</literal></entry>
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<entry>none</entry>
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<entry><literal>\dp</literal></entry>
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</row>
@@ -2325,11 +2308,11 @@ GRANT SELECT (col1), UPDATE (col1) ON mytable TO miriam_rw;
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<programlisting>
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=&gt; \dp mytable
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Access privileges
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Schema | Name | Type | Access privileges | Column privileges | Policies
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--------+---------+-------+------------------------+-----------------------+----------
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public | mytable | table | miriam=arwdDxtm/miriam+| col1: +|
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| | | =r/miriam +| miriam_rw=rw/miriam |
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| | | admin=arw/miriam | |
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Schema | Name | Type | Access privileges | Column privileges | Policies
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--------+---------+-------+-----------------------+-----------------------+----------
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public | mytable | table | miriam=arwdDxt/miriam+| col1: +|
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| | | =r/miriam +| miriam_rw=rw/miriam |
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| | | admin=arw/miriam | |
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(1 row)
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</programlisting>
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</para>

‎doc/src/sgml/func.sgml

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Original file line numberDiff line numberDiff line change
@@ -23545,7 +23545,7 @@ SELECT has_function_privilege('joeuser', 'myfunc(int, text)', 'execute');
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are <literal>SELECT</literal>, <literal>INSERT</literal>,
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<literal>UPDATE</literal>, <literal>DELETE</literal>,
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<literal>TRUNCATE</literal>, <literal>REFERENCES</literal>,
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<literal>TRIGGER</literal>, and <literal>MAINTAIN</literal>.
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and <literal>TRIGGER</literal>.
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</para></entry>
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</row>
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‎doc/src/sgml/ref/alter_default_privileges.sgml

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -28,7 +28,7 @@ ALTER DEFAULT PRIVILEGES
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<phrase>where <replaceable class="parameter">abbreviated_grant_or_revoke</replaceable> is one of:</phrase>
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GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
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GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
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[, ...] | ALL [ PRIVILEGES ] }
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ON TABLES
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TO { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...] [ WITH GRANT OPTION ]
@@ -51,7 +51,7 @@ GRANT { USAGE | CREATE | ALL [ PRIVILEGES ] }
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TO { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...] [ WITH GRANT OPTION ]
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REVOKE [ GRANT OPTION FOR ]
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{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
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{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
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[, ...] | ALL [ PRIVILEGES ] }
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ON TABLES
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FROM { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...]

‎doc/src/sgml/ref/analyze.sgml

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@@ -182,9 +182,11 @@ ANALYZE [ VERBOSE ] [ <replaceable class="parameter">table_and_columns</replacea
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<title>Notes</title>
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<para>
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To analyze a table, one must ordinarily have the <literal>MAINTAIN</literal>
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privilege on the table. However, database owners are allowed to
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To analyze a table, one must ordinarily be the table's owner or a
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superuser. However, database owners are allowed to
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analyze all tables in their databases, except shared catalogs.
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(The restriction for shared catalogs means that a true database-wide
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<command>ANALYZE</command> can only be performed by a superuser.)
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<command>ANALYZE</command> will skip over any tables that the calling user
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does not have permission to analyze.
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</para>

‎doc/src/sgml/ref/cluster.sgml

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@@ -70,8 +70,9 @@ CLUSTER [VERBOSE]
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<command>CLUSTER</command> without a
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<replaceable class="parameter">table_name</replaceable> reclusters all the
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previously-clustered tables in the current database that the calling user
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has privileges for. This form of <command>CLUSTER</command> cannot be
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executed inside a transaction block.
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owns, or all such tables if called by a superuser. This
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form of <command>CLUSTER</command> cannot be executed inside a transaction
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block.
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</para>
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<para>
@@ -132,11 +133,6 @@ CLUSTER [VERBOSE]
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<refsect1>
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<title>Notes</title>
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<para>
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To cluster a table, one must have the <literal>MAINTAIN</literal> privilege
137-
on the table.
138-
</para>
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<para>
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In cases where you are accessing single rows randomly
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within a table, the actual order of the data in the

‎doc/src/sgml/ref/grant.sgml

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -21,7 +21,7 @@ PostgreSQL documentation
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<refsynopsisdiv>
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<synopsis>
24-
GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
24+
GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
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[, ...] | ALL [ PRIVILEGES ] }
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ON { [ TABLE ] <replaceable class="parameter">table_name</replaceable> [, ...]
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| ALL TABLES IN SCHEMA <replaceable class="parameter">schema_name</replaceable> [, ...] }
@@ -193,7 +193,6 @@ GRANT <replaceable class="parameter">role_name</replaceable> [, ...] TO <replace
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<term><literal>USAGE</literal></term>
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<term><literal>SET</literal></term>
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<term><literal>ALTER SYSTEM</literal></term>
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<term><literal>MAINTAIN</literal></term>
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<listitem>
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<para>
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Specific types of privileges, as defined in <xref linkend="ddl-priv"/>.

‎doc/src/sgml/ref/lock.sgml

Lines changed: 2 additions & 2 deletions
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@@ -166,8 +166,8 @@ LOCK [ TABLE ] [ ONLY ] <replaceable class="parameter">name</replaceable> [ * ]
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<para>
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To lock a table, the user must have the right privilege for the specified
169-
<replaceable class="parameter">lockmode</replaceable>.
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If the user has <literal>MAINTAIN</literal>,
169+
<replaceable class="parameter">lockmode</replaceable>, or be the table's
170+
owner or a superuser. If the user has
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<literal>UPDATE</literal>, <literal>DELETE</literal>, or
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<literal>TRUNCATE</literal> privileges on the table, any <replaceable
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class="parameter">lockmode</replaceable> is permitted. If the user has

‎doc/src/sgml/ref/refresh_materialized_view.sgml

Lines changed: 2 additions & 3 deletions
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@@ -31,9 +31,8 @@ REFRESH MATERIALIZED VIEW [ CONCURRENTLY ] <replaceable class="parameter">name</
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<para>
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<command>REFRESH MATERIALIZED VIEW</command> completely replaces the
34-
contents of a materialized view. To execute this command you must have the
35-
<literal>MAINTAIN</literal>
36-
privilege on the materialized view. The old contents are discarded. If
34+
contents of a materialized view. To execute this command you must be the
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owner of the materialized view. The old contents are discarded. If
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<literal>WITH DATA</literal> is specified (or defaults) the backing query
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is executed to provide the new data, and the materialized view is left in a
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scannable state. If <literal>WITH NO DATA</literal> is specified no new

‎doc/src/sgml/ref/reindex.sgml

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@@ -292,21 +292,16 @@ REINDEX [ ( <replaceable class="parameter">option</replaceable> [, ...] ) ] { DA
292292
</para>
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<para>
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Reindexing a single index or table requires
296-
having the <literal>MAINTAIN</literal> privilege on the
297-
table. Note that while <command>REINDEX</command> on a partitioned index or
298-
table requires having the <literal>MAINTAIN</literal> privilege on the
299-
partitioned table, such commands skip the privilege checks when processing
300-
the individual partitions. Reindexing a schema or database requires being the
301-
owner of that schema or database or having privileges of the
302-
<link linkend="predefined-roles-table"><literal>pg_maintain</literal></link>
303-
role. Note specifically that it's thus
295+
Reindexing a single index or table requires being the owner of that
296+
index or table. Reindexing a schema or database requires being the
297+
owner of that schema or database. Note specifically that it's thus
304298
possible for non-superusers to rebuild indexes of tables owned by
305-
other users. However, as a special exception,
306-
<command>REINDEX DATABASE</command>, <command>REINDEX SCHEMA</command>,
307-
and <command>REINDEX SYSTEM</command> will skip indexes on shared catalogs
308-
unless the user has the <literal>MAINTAIN</literal> privilege on the
309-
catalog.
299+
other users. However, as a special exception, when
300+
<command>REINDEX DATABASE</command>, <command>REINDEX SCHEMA</command>
301+
or <command>REINDEX SYSTEM</command> is issued by a non-superuser,
302+
indexes on shared catalogs will be skipped unless the user owns the
303+
catalog (which typically won't be the case). Of course, superusers
304+
can always reindex anything.
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</para>
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<para>

‎doc/src/sgml/ref/revoke.sgml

Lines changed: 1 addition & 1 deletion
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@@ -22,7 +22,7 @@ PostgreSQL documentation
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<refsynopsisdiv>
2323
<synopsis>
2424
REVOKE [ GRANT OPTION FOR ]
25-
{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
25+
{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
2626
[, ...] | ALL [ PRIVILEGES ] }
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ON { [ TABLE ] <replaceable class="parameter">table_name</replaceable> [, ...]
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| ALL TABLES IN SCHEMA <replaceable>schema_name</replaceable> [, ...] }

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