diff options
| author | Masahiko Sawada <msawada@postgresql.org> | 2024-08-05 06:05:25 -0700 |
|---|---|---|
| committer | Masahiko Sawada <msawada@postgresql.org> | 2024-08-05 06:05:25 -0700 |
| commit | e81e53a0c1faf2b8f5fe8822d7218c91aeebea52 (patch) | |
| tree | 4ae24029cec9f60ff6b5081c6ef02ba1dd161479 /src/include | |
| parent | 8b57eb67e8428d93f42f603a917e610477a08821 (diff) | |
Restrict accesses to non-system views and foreign tables during pg_dump.
When pg_dump retrieves the list of database objects and performs the
data dump, there was possibility that objects are replaced with others
of the same name, such as views, and access them. This vulnerability
could result in code execution with superuser privileges during the
pg_dump process.
This issue can arise when dumping data of sequences, foreign
tables (only 13 or later), or tables registered with a WHERE clause in
the extension configuration table.
To address this, pg_dump now utilizes the newly introduced
restrict_nonsystem_relation_kind GUC parameter to restrict the
accesses to non-system views and foreign tables during the dump
process. This new GUC parameter is added to back branches too, but
these changes do not require cluster recreation.
Back-patch to all supported branches.
Reviewed-by: Noah Misch
Security: CVE-2024-7348
Backpatch-through: 12
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/tcop/tcopprot.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/include/tcop/tcopprot.h b/src/include/tcop/tcopprot.h index 70d9dab25b8..d7d307bbfab 100644 --- a/src/include/tcop/tcopprot.h +++ b/src/include/tcop/tcopprot.h @@ -43,6 +43,12 @@ typedef enum extern PGDLLIMPORT int log_statement; +/* Flags for restrict_nonsystem_relation_kind value */ +#define RESTRICT_RELKIND_VIEW 0x01 +#define RESTRICT_RELKIND_FOREIGN_TABLE 0x02 + +extern PGDLLIMPORT int restrict_nonsystem_relation_kind; + extern List *pg_parse_query(const char *query_string); extern List *pg_rewrite_query(Query *query); extern List *pg_analyze_and_rewrite_fixedparams(RawStmt *parsetree, @@ -68,6 +74,9 @@ extern List *pg_plan_queries(List *querytrees, const char *query_string, extern bool check_max_stack_depth(int *newval, void **extra, GucSource source); extern void assign_max_stack_depth(int newval, void *extra); +extern bool check_restrict_nonsystem_relation_kind(char **newval, void **extra, + GucSource source); +extern void assign_restrict_nonsystem_relation_kind(const char *newval, void *extra); extern void die(SIGNAL_ARGS); extern void quickdie(SIGNAL_ARGS) pg_attribute_noreturn(); |