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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 11:25:23 -07:00
parent 1124cb2cf2
commit 957445996f
41 changed files with 179 additions and 445 deletions
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3
src/include/nodes/parsenodes.h
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@@ -94,8 +94,7 @@ typedef uint64 AclMode; /* a bitmask of privilege bits */
#define ACL_CONNECT (1<<11) /* for databases */
#define ACL_SET (1<<12) /* for configuration parameters */
#define ACL_ALTER_SYSTEM (1<<13) /* for configuration parameters */
#define ACL_MAINTAIN (1<<14) /* for relations */
#define N_ACL_RIGHTS 15 /* 1 plus the last 1<<x */
#define N_ACL_RIGHTS 14 /* 1 plus the last 1<<x */
#define ACL_NO_RIGHTS 0
/* Currently, SELECT ... FOR [KEY] UPDATE/SHARE requires UPDATE privileges */
#define ACL_SELECT_FOR_UPDATE ACL_UPDATE