File 0002-wpa_cli-Use-os_exec-for-action-script-exec... of Package wpa_supplicant

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File 0002-wpa_cli-Use-os_exec-for-action-script-execution.patch of Package wpa_supplicant (Revision 541aa8667281ab0394c5e9a2a77ef252)

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From c5f258de76dbb67fb64beab39a99e5c5711f41fe Mon Sep 17 00:00:00 2001
From: Jouni Malinen <jouni@qca.qualcomm.com>
Date: Mon, 6 Oct 2014 17:25:52 +0300
Subject: [PATCH 2/3] wpa_cli: Use os_exec() for action script execution

Use os_exec() to run the action script operations to avoid undesired
command line processing for control interface event strings. Previously,
it could have been possible for some of the event strings to include
unsanitized data which is not suitable for system() use. (CVE-2014-3686)

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
---
 wpa_supplicant/wpa_cli.c | 25 ++++++++-----------------
 1 file changed, 8 insertions(+), 17 deletions(-)

diff --git a/wpa_supplicant/wpa_cli.c b/wpa_supplicant/wpa_cli.c
index 18b9b77..fe30b41 100644
--- a/wpa_supplicant/wpa_cli.c
+++ b/wpa_supplicant/wpa_cli.c
@@ -3159,28 +3159,19 @@ static int str_match(const char *a, const char *b)
 static int wpa_cli_exec(const char *program, const char *arg1,
 			const char *arg2)
 {
-	char *cmd;
+	char *arg;
 	size_t len;
 	int res;
-	int ret = 0;
 
-	len = os_strlen(program) + os_strlen(arg1) + os_strlen(arg2) + 3;
-	cmd = os_malloc(len);
-	if (cmd == NULL)
-		return -1;
-	res = os_snprintf(cmd, len, "%s %s %s", program, arg1, arg2);
-	if (res < 0 || (size_t) res >= len) {
-		os_free(cmd);
+	len = os_strlen(arg1) + os_strlen(arg2) + 2;
+	arg = os_malloc(len);
+	if (arg == NULL)
 		return -1;
-	}
-	cmd[len - 1] = '\0';
-#ifndef _WIN32_WCE
-	if (system(cmd) < 0)
-		ret = -1;
-#endif /* _WIN32_WCE */
-	os_free(cmd);
+	os_snprintf(arg, len, "%s %s", arg1, arg2);
+	res = os_exec(program, arg, 1);
+	os_free(arg);
 
-	return ret;
+	return res;
 }
 
 
-- 
1.9.1

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File 0002-wpa_cli-Use-os_exec-for-action-script-execution.patch of Package wpa_supplicant (Revision 541aa8667281ab0394c5e9a2a77ef252)

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