diff options
Diffstat (limited to 'php-bug81720.patch')
| -rw-r--r-- | php-bug81720.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/php-bug81720.patch b/php-bug81720.patch new file mode 100644 index 0000000..3e47b6c --- /dev/null +++ b/php-bug81720.patch @@ -0,0 +1,77 @@ +From 310b17f5c8938389b1dbd7d8ff5a8144bfb9a351 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Tue, 17 May 2022 12:59:23 +0200 +Subject: [PATCH 1/3] Fix #81720: Uninitialized array in pg_query_params() + leading to RCE + +We must not free parameters which we haven't initialized yet. + +We also fix the not directly related issue, that we checked for the +wrong value being `NULL`, potentially causing a segfault. + +(cherry picked from commit 55f6895f4b4c677272fd4ee1113acdbd99c4b5ab) +(cherry picked from commit 6f979c832c861fb32e2dbad5e0cc29edcee7c500) +--- + ext/pgsql/pgsql.c | 4 ++-- + ext/pgsql/tests/bug81720.phpt | 27 +++++++++++++++++++++++++++ + 2 files changed, 29 insertions(+), 2 deletions(-) + create mode 100644 ext/pgsql/tests/bug81720.phpt + +diff --git a/ext/pgsql/pgsql.c b/ext/pgsql/pgsql.c +index c97c600b66..8bc7568056 100644 +--- a/ext/pgsql/pgsql.c ++++ b/ext/pgsql/pgsql.c +@@ -1988,7 +1988,7 @@ PHP_FUNCTION(pg_query_params) + if (Z_TYPE(tmp_val) != IS_STRING) { + php_error_docref(NULL, E_WARNING,"Error converting parameter"); + zval_ptr_dtor(&tmp_val); +- _php_pgsql_free_params(params, num_params); ++ _php_pgsql_free_params(params, i); + RETURN_FALSE; + } + params[i] = estrndup(Z_STRVAL(tmp_val), Z_STRLEN(tmp_val)); +@@ -5188,7 +5188,7 @@ PHP_FUNCTION(pg_send_execute) + if (Z_TYPE(tmp_val) != IS_STRING) { + php_error_docref(NULL, E_WARNING,"Error converting parameter"); + zval_ptr_dtor(&tmp_val); +- _php_pgsql_free_params(params, num_params); ++ _php_pgsql_free_params(params, i); + RETURN_FALSE; + } + params[i] = estrndup(Z_STRVAL(tmp_val), Z_STRLEN(tmp_val)); +diff --git a/ext/pgsql/tests/bug81720.phpt b/ext/pgsql/tests/bug81720.phpt +new file mode 100644 +index 0000000000..d79f1fcdd6 +--- /dev/null ++++ b/ext/pgsql/tests/bug81720.phpt +@@ -0,0 +1,27 @@ ++--TEST-- ++Bug #81720 (Uninitialized array in pg_query_params() leading to RCE) ++--SKIPIF-- ++<?php include("skipif.inc"); ?> ++--FILE-- ++<?php ++include('config.inc'); ++ ++$conn = pg_connect($conn_str); ++ ++try { ++ pg_query_params($conn, 'SELECT $1, $2', [1, new stdClass()]); ++} catch (Throwable $ex) { ++ echo $ex->getMessage(), PHP_EOL; ++} ++ ++try { ++ pg_send_prepare($conn, "my_query", 'SELECT $1, $2'); ++ pg_get_result($conn); ++ pg_send_execute($conn, "my_query", [1, new stdClass()]); ++} catch (Throwable $ex) { ++ echo $ex->getMessage(), PHP_EOL; ++} ++?> ++--EXPECT-- ++Object of class stdClass could not be converted to string ++Object of class stdClass could not be converted to string +-- +2.35.3 + |