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import CS postgresql-10.23-2.module_el8+572+929c87ac

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eabdullin 2023-08-09 06:57:06 +00:00
parent 6b32df45d6
commit 52521430de
5 changed files with 377 additions and 6 deletions
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2
.gitignore vendored
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@ -1,4 +1,4 @@
SOURCES/postgresql-10.23-US.pdf
SOURCES/postgresql-10.23.tar.bz2
SOURCES/postgresql-9.2.24.tar.bz2
SOURCES/postgresql-setup-8.6.tar.gz
SOURCES/postgresql-setup-8.7.tar.gz

2
.postgresql.metadata
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@ -1,4 +1,4 @@
a416c245ff0815fbde534bc49b0a07ffdd373894 SOURCES/postgresql-10.23-US.pdf
2df7b4b3751112f3cb543c3ea81e45531bebc7a1 SOURCES/postgresql-10.23.tar.bz2
63d6966ccdbab6aae1f9754fdb8e341ada1ef653 SOURCES/postgresql-9.2.24.tar.bz2
9e12ee26bf41d3831f83049b51ae5da76de2ce12 SOURCES/postgresql-setup-8.6.tar.gz
fb97095dc9648f9c31d58fcb406831da5e419ddf SOURCES/postgresql-setup-8.7.tar.gz

249
SOURCES/postgresql-10.23-CVE-2023-2454.patch Normal file
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@ -0,0 +1,249 @@
From 681d9e4621aac0a9c71364b6f54f00f6d8c4337f Mon Sep 17 00:00:00 2001
From 8d525d7b9545884a3e0d79adcd61543f9ae2ae28 Mon Sep 17 00:00:00 2001
From: Noah Misch <noah@leadboat.com>
Date: Mon, 8 May 2023 06:14:07 -0700
Subject: Replace last PushOverrideSearchPath() call with
set_config_option().
The two methods don't cooperate, so set_config_option("search_path",
...) has been ineffective under non-empty overrideStack. This defect
enabled an attacker having database-level CREATE privilege to execute
arbitrary code as the bootstrap superuser. While that particular attack
requires v13+ for the trusted extension attribute, other attacks are
feasible in all supported versions.
Standardize on the combination of NewGUCNestLevel() and
set_config_option("search_path", ...). It is newer than
PushOverrideSearchPath(), more-prevalent, and has no known
disadvantages. The "override" mechanism remains for now, for
compatibility with out-of-tree code. Users should update such code,
which likely suffers from the same sort of vulnerability closed here.
Back-patch to v11 (all supported versions).
Alexander Lakhin. Reported by Alexander Lakhin.
Security: CVE-2023-2454
---
contrib/seg/Makefile | 2 +-
contrib/seg/expected/security.out | 32 ++++++++++++++++++
contrib/seg/sql/security.sql | 32 ++++++++++++++++++
src/backend/catalog/namespace.c | 4 +++
src/backend/commands/schemacmds.c | 37 ++++++++++++++------
src/test/regress/expected/namespace.out | 45 +++++++++++++++++++++++++
src/test/regress/sql/namespace.sql | 24 +++++++++++++
7 files changed, 165 insertions(+), 11 deletions(-)
create mode 100644 contrib/seg/expected/security.out
create mode 100644 contrib/seg/sql/security.sql
diff --git a/src/backend/catalog/namespace.c b/src/backend/catalog/namespace.c
index 14e57adee2..73ddb67882 100644
--- a/src/backend/catalog/namespace.c
+++ b/src/backend/catalog/namespace.c
@@ -3515,6 +3515,10 @@ OverrideSearchPathMatchesCurrent(OverrideSearchPath *path)
/*
* PushOverrideSearchPath - temporarily override the search path
*
+ * Do not use this function; almost any usage introduces a security
+ * vulnerability. It exists for the benefit of legacy code running in
+ * non-security-sensitive environments.
+ *
* We allow nested overrides, hence the push/pop terminology. The GUC
* search_path variable is ignored while an override is active.
*
diff --git a/src/backend/commands/schemacmds.c b/src/backend/commands/schemacmds.c
index 48590247f8..b6a71154a8 100644
--- a/src/backend/commands/schemacmds.c
+++ b/src/backend/commands/schemacmds.c
@@ -30,6 +30,7 @@
#include "commands/schemacmds.h"
#include "miscadmin.h"
#include "parser/parse_utilcmd.h"
+#include "parser/scansup.h"
#include "tcop/utility.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -53,14 +54,16 @@ CreateSchemaCommand(CreateSchemaStmt *stmt, const char *queryString,
{
const char *schemaName = stmt->schemaname;
Oid namespaceId;
- OverrideSearchPath *overridePath;
List *parsetree_list;
ListCell *parsetree_item;
Oid owner_uid;
Oid saved_uid;
int save_sec_context;
+ int save_nestlevel;
+ char *nsp = namespace_search_path;
AclResult aclresult;
ObjectAddress address;
+ StringInfoData pathbuf;
GetUserIdAndSecContext(&saved_uid, &save_sec_context);
@@ -153,14 +156,26 @@ CreateSchemaCommand(CreateSchemaStmt *stmt, const char *queryString,
CommandCounterIncrement();
/*
- * Temporarily make the new namespace be the front of the search path, as
- * well as the default creation target namespace. This will be undone at
- * the end of this routine, or upon error.
+ * Prepend the new schema to the current search path.
+ *
+ * We use the equivalent of a function SET option to allow the setting to
+ * persist for exactly the duration of the schema creation. guc.c also
+ * takes care of undoing the setting on error.
*/
- overridePath = GetOverrideSearchPath(CurrentMemoryContext);
- overridePath->schemas = lcons_oid(namespaceId, overridePath->schemas);
- /* XXX should we clear overridePath->useTemp? */
- PushOverrideSearchPath(overridePath);
+ save_nestlevel = NewGUCNestLevel();
+
+ initStringInfo(&pathbuf);
+ appendStringInfoString(&pathbuf, quote_identifier(schemaName));
+
+ while (scanner_isspace(*nsp))
+ nsp++;
+
+ if (*nsp != '\0')
+ appendStringInfo(&pathbuf, ", %s", nsp);
+
+ (void) set_config_option("search_path", pathbuf.data,
+ PGC_USERSET, PGC_S_SESSION,
+ GUC_ACTION_SAVE, true, 0, false);
/*
* Report the new schema to possibly interested event triggers. Note we
@@ -215,8 +230,10 @@ CreateSchemaCommand(CreateSchemaStmt *stmt, const char *queryString,
CommandCounterIncrement();
}
- /* Reset search path to normal state */
- PopOverrideSearchPath();
+ /*
+ * Restore the GUC variable search_path we set above.
+ */
+ AtEOXact_GUC(true, save_nestlevel);
/* Reset current user and security context */
SetUserIdAndSecContext(saved_uid, save_sec_context);
diff --git a/src/test/regress/expected/namespace.out b/src/test/regress/expected/namespace.out
index 2564d1b080..a62fd8ded0 100644
--- a/src/test/regress/expected/namespace.out
+++ b/src/test/regress/expected/namespace.out
@@ -1,6 +1,14 @@
--
-- Regression tests for schemas (namespaces)
--
+-- set the whitespace-only search_path to test that the
+-- GUC list syntax is preserved during a schema creation
+SELECT pg_catalog.set_config('search_path', ' ', false);
+ set_config
+------------
+
+(1 row)
+
CREATE SCHEMA test_schema_1
CREATE UNIQUE INDEX abc_a_idx ON abc (a)
CREATE VIEW abc_view AS
@@ -9,6 +17,43 @@ CREATE SCHEMA test_schema_1
a serial,
b int UNIQUE
);
+-- verify that the correct search_path restored on abort
+SET search_path to public;
+BEGIN;
+SET search_path to public, test_schema_1;
+CREATE SCHEMA test_schema_2
+ CREATE VIEW abc_view AS SELECT c FROM abc;
+ERROR: column "c" does not exist
+LINE 2: CREATE VIEW abc_view AS SELECT c FROM abc;
+ ^
+COMMIT;
+SHOW search_path;
+ search_path
+-------------
+ public
+(1 row)
+
+-- verify that the correct search_path preserved
+-- after creating the schema and on commit
+BEGIN;
+SET search_path to public, test_schema_1;
+CREATE SCHEMA test_schema_2
+ CREATE VIEW abc_view AS SELECT a FROM abc;
+SHOW search_path;
+ search_path
+-----------------------
+ public, test_schema_1
+(1 row)
+
+COMMIT;
+SHOW search_path;
+ search_path
+-----------------------
+ public, test_schema_1
+(1 row)
+
+DROP SCHEMA test_schema_2 CASCADE;
+NOTICE: drop cascades to view test_schema_2.abc_view
-- verify that the objects were created
SELECT COUNT(*) FROM pg_class WHERE relnamespace =
(SELECT oid FROM pg_namespace WHERE nspname = 'test_schema_1');
diff --git a/src/test/regress/sql/namespace.sql b/src/test/regress/sql/namespace.sql
index 6b12c96193..3474f5ecf4 100644
--- a/src/test/regress/sql/namespace.sql
+++ b/src/test/regress/sql/namespace.sql
@@ -2,6 +2,10 @@
-- Regression tests for schemas (namespaces)
--
+-- set the whitespace-only search_path to test that the
+-- GUC list syntax is preserved during a schema creation
+SELECT pg_catalog.set_config('search_path', ' ', false);
+
CREATE SCHEMA test_schema_1
CREATE UNIQUE INDEX abc_a_idx ON abc (a)
@@ -13,6 +17,26 @@ CREATE SCHEMA test_schema_1
b int UNIQUE
);
+-- verify that the correct search_path restored on abort
+SET search_path to public;
+BEGIN;
+SET search_path to public, test_schema_1;
+CREATE SCHEMA test_schema_2
+ CREATE VIEW abc_view AS SELECT c FROM abc;
+COMMIT;
+SHOW search_path;
+
+-- verify that the correct search_path preserved
+-- after creating the schema and on commit
+BEGIN;
+SET search_path to public, test_schema_1;
+CREATE SCHEMA test_schema_2
+ CREATE VIEW abc_view AS SELECT a FROM abc;
+SHOW search_path;
+COMMIT;
+SHOW search_path;
+DROP SCHEMA test_schema_2 CASCADE;
+
-- verify that the objects were created
SELECT COUNT(*) FROM pg_class WHERE relnamespace =
(SELECT oid FROM pg_namespace WHERE nspname = 'test_schema_1');
diff --git a/contrib/sepgsql/expected/ddl.out b/contrib/sepgsql/expected/ddl.out
index e8da587564..15d2b9c5e7 100644
--- a/contrib/sepgsql/expected/ddl.out
+++ b/contrib/sepgsql/expected/ddl.out
@@ -24,7 +24,6 @@ LOG: SELinux: allowed { create } scontext=unconfined_u:unconfined_r:sepgsql_reg
CREATE USER regress_sepgsql_test_user;
CREATE SCHEMA regtest_schema;
LOG: SELinux: allowed { create } scontext=unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0 tcontext=unconfined_u:object_r:sepgsql_schema_t:s0 tclass=db_schema name="regtest_schema"
-LOG: SELinux: allowed { search } scontext=unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0 tcontext=system_u:object_r:sepgsql_schema_t:s0 tclass=db_schema name="public"
GRANT ALL ON SCHEMA regtest_schema TO regress_sepgsql_test_user;
SET search_path = regtest_schema, public;
CREATE TABLE regtest_table (x serial primary key, y text);
--
2.41.0

114
SOURCES/postgresql-10.23-CVE-2023-2455.patch Normal file
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@ -0,0 +1,114 @@
From ca73753b090c33bc69ce299b4d7fff891a77b8ad Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Mon, 8 May 2023 10:12:44 -0400
Subject: Handle RLS dependencies in inlined set-returning
functions properly.
If an SRF in the FROM clause references a table having row-level
security policies, and we inline that SRF into the calling query,
we neglected to mark the plan as potentially dependent on which
role is executing it. This could lead to later executions in the
same session returning or hiding rows that should have been hidden
or returned instead.
Our thanks to Wolfgang Walther for reporting this problem.
Stephen Frost and Tom Lane
Security: CVE-2023-2455
---
src/backend/optimizer/util/clauses.c | 7 ++++++
src/test/regress/expected/rowsecurity.out | 27 +++++++++++++++++++++++
src/test/regress/sql/rowsecurity.sql | 20 +++++++++++++++++
3 files changed, 54 insertions(+)
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c
index a9c7bc342e..11269fee3e 100644
--- a/src/backend/optimizer/util/clauses.c
+++ b/src/backend/optimizer/util/clauses.c
@@ -5205,6 +5205,13 @@ inline_set_returning_function(PlannerInfo *root, RangeTblEntry *rte)
*/
record_plan_function_dependency(root, func_oid);
+ /*
+ * We must also notice if the inserted query adds a dependency on the
+ * calling role due to RLS quals.
+ */
+ if (querytree->hasRowSecurity)
+ root->glob->dependsOnRole = true;
+
return querytree;
/* Here if func is not inlinable: release temp memory and return NULL */
diff --git a/src/test/regress/expected/rowsecurity.out b/src/test/regress/expected/rowsecurity.out
index 38f53ed486..e278346420 100644
--- a/src/test/regress/expected/rowsecurity.out
+++ b/src/test/regress/expected/rowsecurity.out
@@ -4427,6 +4427,33 @@ SELECT * FROM rls_tbl;
DROP TABLE rls_tbl;
RESET SESSION AUTHORIZATION;
+-- CVE-2023-2455: inlining an SRF may introduce an RLS dependency
+create table rls_t (c text);
+insert into rls_t values ('invisible to bob');
+alter table rls_t enable row level security;
+grant select on rls_t to regress_rls_alice, regress_rls_bob;
+create policy p1 on rls_t for select to regress_rls_alice using (true);
+create policy p2 on rls_t for select to regress_rls_bob using (false);
+create function rls_f () returns setof rls_t
+ stable language sql
+ as $$ select * from rls_t $$;
+prepare q as select current_user, * from rls_f();
+set role regress_rls_alice;
+execute q;
+ current_user | c
+-------------------+------------------
+ regress_rls_alice | invisible to bob
+(1 row)
+
+set role regress_rls_bob;
+execute q;
+ current_user | c
+--------------+---
+(0 rows)
+
+RESET ROLE;
+DROP FUNCTION rls_f();
+DROP TABLE rls_t;
--
-- Clean up objects
--
diff --git a/src/test/regress/sql/rowsecurity.sql b/src/test/regress/sql/rowsecurity.sql
index 0fd0cded7d..3d664538a6 100644
--- a/src/test/regress/sql/rowsecurity.sql
+++ b/src/test/regress/sql/rowsecurity.sql
@@ -2127,6 +2127,26 @@ SELECT * FROM rls_tbl;
DROP TABLE rls_tbl;
RESET SESSION AUTHORIZATION;
+-- CVE-2023-2455: inlining an SRF may introduce an RLS dependency
+create table rls_t (c text);
+insert into rls_t values ('invisible to bob');
+alter table rls_t enable row level security;
+grant select on rls_t to regress_rls_alice, regress_rls_bob;
+create policy p1 on rls_t for select to regress_rls_alice using (true);
+create policy p2 on rls_t for select to regress_rls_bob using (false);
+create function rls_f () returns setof rls_t
+ stable language sql
+ as $$ select * from rls_t $$;
+prepare q as select current_user, * from rls_f();
+set role regress_rls_alice;
+execute q;
+set role regress_rls_bob;
+execute q;
+
+RESET ROLE;
+DROP FUNCTION rls_f();
+DROP TABLE rls_t;
+
--
-- Clean up objects
--
--
2.41.0

16
SPECS/postgresql.spec
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@ -59,7 +59,7 @@ Summary: PostgreSQL client programs
Name: postgresql
%global majorversion 10
Version: %{majorversion}.23
Release: 1%{?dist}
Release: 2%{?dist}
# The PostgreSQL license is very similar to other MIT licenses, but the OSI
# recognizes it as an independent license, so we do as well.
@ -76,7 +76,7 @@ Url: http://www.postgresql.org/
%global prev_prefix %{_libdir}/pgsql/postgresql-%{prevmajorversion}
%global precise_version %{?epoch:%epoch:}%version-%release
%global setup_version 8.6
%global setup_version 8.7
%global service_name postgresql.service
Source0: https://ftp.postgresql.org/pub/source/v%{version}/postgresql-%{version}.tar.bz2
@ -108,6 +108,8 @@ Patch6: postgresql-man.patch
Patch8: postgresql-no-libs.patch
Patch9: postgresql-server-pg_config.patch
Patch10: postgresql-10.15-contrib-dblink-expected-out.patch
Patch11: postgresql-10.23-CVE-2023-2454.patch
Patch12: postgresql-10.23-CVE-2023-2455.patch
BuildRequires: gcc
BuildRequires: perl(ExtUtils::MakeMaker) glibc-devel bison flex gawk
@ -367,6 +369,8 @@ benchmarks.
%patch8 -p1
%patch9 -p1
%patch10 -p1
%patch11 -p1
%patch12 -p1
# We used to run autoconf here, but there's no longer any real need to,
# since Postgres ships with a reasonably modern configure script.
@ -1171,9 +1175,13 @@ make -C postgresql-setup-%{setup_version} check
%changelog
* Wed Jul 19 2023 Dominik Rehák <drehak@redhat.com> - 10.23-2
- Backport fixes for CVE-2023-2454 and CVE-2023-2455
- Update postgresql-setup to 8.7 (https://github.com/devexp-db/postgresql-setup/pull/35)
- Resolves: #2207931
* Wed Nov 16 2022 Filip Januš <fjanus@redhat.com> - 10.23-1
- Fix CVE-2022-2625
- Resolves: #2143167
- Resolves: CVE-2022-2625
- Rebase to 10.23
* Mon May 16 2022 Filip Januš <fjanus@redhat.com> - 10.21-1