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| author | Bruce Momjian <bruce@momjian.us> | 2022-08-31 21:10:37 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2022-08-31 21:10:37 -0400 |
| commit | b6fe152fc27a07322386b269651675083abb6545 (patch) | |
| tree | 96b5b003d1ce0015ee8a3e96b1d0e345ef09af97 | |
| parent | c7dbe904f2f4ec409d903103477b9f857b314fa3 (diff) | |
| download | postgresql-b6fe152fc27a07322386b269651675083abb6545.tar.gz postgresql-b6fe152fc27a07322386b269651675083abb6545.zip | |
doc: warn of SECURITY DEFINER schemas for non-sql_body functions
Non-sql_body functions are evaluated at runtime.
Reported-by: Erki Eessaar
Discussion: https://postgr.es/m/AM9PR01MB8268BF5E74E119828251FD34FE409@AM9PR01MB8268.eurprd01.prod.exchangelabs.com
Backpatch-through: 10
| -rw-r--r-- | doc/src/sgml/ref/create_function.sgml | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/doc/src/sgml/ref/create_function.sgml b/doc/src/sgml/ref/create_function.sgml index 01b7d18f9ec..e71ca092c62 100644 --- a/doc/src/sgml/ref/create_function.sgml +++ b/doc/src/sgml/ref/create_function.sgml @@ -729,7 +729,10 @@ SELECT * FROM dup(42); <para> Because a <literal>SECURITY DEFINER</literal> function is executed with the privileges of the user that owns it, care is needed to - ensure that the function cannot be misused. For security, + ensure that the function cannot be misused. This is particularly + important for non-<replaceable>sql_body</replaceable> functions because + their function bodies are evaluated at run-time, not creation time. + For security, <xref linkend="guc-search-path"/> should be set to exclude any schemas writable by untrusted users. This prevents malicious users from creating objects (e.g., tables, functions, and |