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From 258ad37fe3f91cf862c2870d18d53e5cdb3b3752 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Mon, 13 Apr 2020 21:00:44 -0700
Subject: [PATCH] Fix bug #79330 - make all execution modes consistent in
 rejecting \0

(cherry picked from commit 14fcc813948254b84f382ff537247d8a7e5e0e62)
---
 ext/standard/exec.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ext/standard/exec.c b/ext/standard/exec.c
index 88a6b4ab79..a586b786ee 100644
--- a/ext/standard/exec.c
+++ b/ext/standard/exec.c
@@ -537,6 +537,15 @@ PHP_FUNCTION(shell_exec)
 		return;
 	}
 
+	if (!command_len) {
+		php_error_docref(NULL, E_WARNING, "Cannot execute a blank command");
+		RETURN_FALSE;
+	}
+	if (strlen(command) != command_len) {
+		php_error_docref(NULL, E_WARNING, "NULL byte detected. Possible attack");
+		RETURN_FALSE;
+	}
+
 #ifdef PHP_WIN32
 	if ((in=VCWD_POPEN(command, "rt"))==NULL) {
 #else
From 6117c162636bfd7e981f7531dc4d48e358e62be4 Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@remirepo.net>
Date: Tue, 14 Apr 2020 08:15:07 +0200
Subject: [PATCH] ZTS

---
 ext/standard/exec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ext/standard/exec.c b/ext/standard/exec.c
index a586b786ee..40eca2b2c6 100644
--- a/ext/standard/exec.c
+++ b/ext/standard/exec.c
@@ -538,11 +538,11 @@ PHP_FUNCTION(shell_exec)
 	}
 
 	if (!command_len) {
-		php_error_docref(NULL, E_WARNING, "Cannot execute a blank command");
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot execute a blank command");
 		RETURN_FALSE;
 	}
 	if (strlen(command) != command_len) {
-		php_error_docref(NULL, E_WARNING, "NULL byte detected. Possible attack");
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "NULL byte detected. Possible attack");
 		RETURN_FALSE;
 	}