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hostapd: CVE-2014-3686 fixes 

Signed-off-by: Steven Barth <steven@midlink.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42942 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Steven Barth 2014-10-17 06:15:35 +00:00
parent 6323cec8d6
commit 65c4baa4a6
9 changed files with 229 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
package/network/services/hostapd/Makefile
View File

@ -8,7 +8,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=hostapd
PKG_VERSION:=2014-06-03
PKG_VERSION:=2014-06-03.1
PKG_RELEASE:=1
PKG_REV:=84df167554569af8c87f0a8ac1fb508192417d8e

110
package/network/services/hostapd/patches/002-Add-os_exec-helper-to-run-external-programs.patch Normal file
View File

@ -0,0 +1,110 @@
From 89de07a9442072f88d49869d8ecd8d42bae050a0 Mon Sep 17 00:00:00 2001
From: Jouni Malinen <jouni@qca.qualcomm.com>
Date: Mon, 6 Oct 2014 16:27:44 +0300
Subject: [PATCH 1/3] Add os_exec() helper to run external programs
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
---
src/utils/os.h | 9 +++++++++
src/utils/os_unix.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++
src/utils/os_win32.c | 6 ++++++
3 files changed, 70 insertions(+)
--- a/src/utils/os.h
+++ b/src/utils/os.h
@@ -584,6 +584,15 @@ static inline void os_remove_in_array(vo
*/
size_t os_strlcpy(char *dest, const char *src, size_t siz);
+/**
+ * os_exec - Execute an external program
+ * @program: Path to the program
+ * @arg: Command line argument string
+ * @wait_completion: Whether to wait until the program execution completes
+ * Returns: 0 on success, -1 on error
+ */
+int os_exec(const char *program, const char *arg, int wait_completion);
+
#ifdef OS_REJECT_C_LIB_FUNCTIONS
#define malloc OS_DO_NOT_USE_malloc
--- a/src/utils/os_unix.c
+++ b/src/utils/os_unix.c
@@ -9,6 +9,7 @@
#include "includes.h"
#include <time.h>
+#include <sys/wait.h>
#ifdef ANDROID
#include <sys/capability.h>
@@ -540,3 +541,57 @@ char * os_strdup(const char *s)
}
#endif /* WPA_TRACE */
+
+
+int os_exec(const char *program, const char *arg, int wait_completion)
+{
+ pid_t pid;
+ int pid_status;
+
+ pid = fork();
+ if (pid < 0) {
+ perror("fork");
+ return -1;
+ }
+
+ if (pid == 0) {
+ /* run the external command in the child process */
+ const int MAX_ARG = 30;
+ char *_program, *_arg, *pos;
+ char *argv[MAX_ARG + 1];
+ int i;
+
+ _program = os_strdup(program);
+ _arg = os_strdup(arg);
+
+ argv[0] = _program;
+
+ i = 1;
+ pos = _arg;
+ while (i < MAX_ARG && pos && *pos) {
+ while (*pos == ' ')
+ pos++;
+ if (*pos == '\0')
+ break;
+ argv[i++] = pos;
+ pos = os_strchr(pos, ' ');
+ if (pos)
+ *pos++ = '\0';
+ }
+ argv[i] = NULL;
+
+ execv(program, argv);
+ perror("execv");
+ os_free(_program);
+ os_free(_arg);
+ exit(0);
+ return -1;
+ }
+
+ if (wait_completion) {
+ /* wait for the child process to complete in the parent */
+ waitpid(pid, &pid_status, 0);
+ }
+
+ return 0;
+}
--- a/src/utils/os_win32.c
+++ b/src/utils/os_win32.c
@@ -244,3 +244,9 @@ size_t os_strlcpy(char *dest, const char
return s - src - 1;
}
+
+
+int os_exec(const char *program, const char *arg, int wait_completion)
+{
+ return -1;
+}

54
package/network/services/hostapd/patches/003-wpa_cli-Use-os_exec-for-action-script-execution.patch Normal file
View File

@ -0,0 +1,54 @@
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(-)
--- a/wpa_supplicant/wpa_cli.c
+++ b/wpa_supplicant/wpa_cli.c
@@ -3149,28 +3149,19 @@ static int str_match(const char *a, cons
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)
+ len = os_strlen(arg1) + os_strlen(arg2) + 2;
+ arg = os_malloc(len);
+ if (arg == NULL)
return -1;
- res = os_snprintf(cmd, len, "%s %s %s", program, arg1, arg2);
- if (res < 0 || (size_t) res >= len) {
- os_free(cmd);
- 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;
}

54
package/network/services/hostapd/patches/004-hostapd_cli-Use-os_exec-for-action-script-execution.patch Normal file
View File

@ -0,0 +1,54 @@
From 5d4fa2a29bef013e61185beb21a3ec110885eb9a Mon Sep 17 00:00:00 2001
From: Jouni Malinen <jouni@qca.qualcomm.com>
Date: Mon, 6 Oct 2014 18:49:01 +0300
Subject: [PATCH 3/3] hostapd_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>
---
hostapd/hostapd_cli.c | 25 ++++++++-----------------
1 file changed, 8 insertions(+), 17 deletions(-)
--- a/hostapd/hostapd_cli.c
+++ b/hostapd/hostapd_cli.c
@@ -238,28 +238,19 @@ static int hostapd_cli_cmd_mib(struct wp
static int hostapd_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)
+ len = os_strlen(arg1) + os_strlen(arg2) + 2;
+ arg = os_malloc(len);
+ if (arg == NULL)
return -1;
- res = os_snprintf(cmd, len, "%s %s %s", program, arg1, arg2);
- if (res < 0 || (size_t) res >= len) {
- os_free(cmd);
- 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;
}

6
package/network/services/hostapd/patches/120-daemonize_fix.patch
View File

@ -1,14 +1,14 @@
--- a/src/utils/os_unix.c
+++ b/src/utils/os_unix.c
@@ -9,6 +9,7 @@
#include "includes.h"
@@ -10,6 +10,7 @@
#include <time.h>
#include <sys/wait.h>
+#include <fcntl.h>
#ifdef ANDROID
#include <sys/capability.h>
@@ -154,59 +155,46 @@ int os_gmtime(os_time_t t, struct os_tm
@@ -155,59 +156,46 @@ int os_gmtime(os_time_t t, struct os_tm
return 0;
}

8
package/network/services/hostapd/patches/470-hostapd_cli_ifdef.patch
View File

@ -16,7 +16,7 @@
" get_config show current configuration\n"
" help show this usage help\n"
" interface [ifname] show interfaces/select interface\n"
@@ -362,7 +360,6 @@ static int hostapd_cli_cmd_sa_query(stru
@@ -353,7 +351,6 @@ static int hostapd_cli_cmd_sa_query(stru
#endif /* CONFIG_IEEE80211W */
@ -24,7 +24,7 @@
static int hostapd_cli_cmd_wps_pin(struct wpa_ctrl *ctrl, int argc,
char *argv[])
{
@@ -588,7 +585,6 @@ static int hostapd_cli_cmd_wps_config(st
@@ -579,7 +576,6 @@ static int hostapd_cli_cmd_wps_config(st
ssid_hex, argv[1]);
return wpa_ctrl_command(ctrl, buf);
}
@ -32,7 +32,7 @@
static int hostapd_cli_cmd_disassoc_imminent(struct wpa_ctrl *ctrl, int argc,
@@ -979,7 +975,6 @@ static struct hostapd_cli_cmd hostapd_cl
@@ -970,7 +966,6 @@ static struct hostapd_cli_cmd hostapd_cl
#ifdef CONFIG_IEEE80211W
{ "sa_query", hostapd_cli_cmd_sa_query },
#endif /* CONFIG_IEEE80211W */
@ -40,7 +40,7 @@
{ "wps_pin", hostapd_cli_cmd_wps_pin },
{ "wps_check_pin", hostapd_cli_cmd_wps_check_pin },
{ "wps_pbc", hostapd_cli_cmd_wps_pbc },
@@ -993,7 +988,6 @@ static struct hostapd_cli_cmd hostapd_cl
@@ -984,7 +979,6 @@ static struct hostapd_cli_cmd hostapd_cl
{ "wps_ap_pin", hostapd_cli_cmd_wps_ap_pin },
{ "wps_config", hostapd_cli_cmd_wps_config },
{ "wps_get_status", hostapd_cli_cmd_wps_get_status },