mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
1414f1647d
This fixes the following security problems: * CVE-2015-7560 * CVE-2015-5370 * CVE-2016-2110 * CVE-2016-2111 * CVE-2016-2112 * CVE-2016-2115 * CVE-2016-2118 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> SVN-Revision: 49175
94 lines
2.5 KiB
Diff
94 lines
2.5 KiB
Diff
From 8e49de7754f7171a58a1f94dee0f1138dbee3c60 Mon Sep 17 00:00:00 2001
|
|
From: Jeremy Allison <jra@samba.org>
|
|
Date: Fri, 23 Oct 2015 14:54:31 -0700
|
|
Subject: [PATCH] CVE-2015-5299: s3-shadow-copy2: fix missing access check on
|
|
snapdir
|
|
|
|
Fix originally from <partha@exablox.com>
|
|
|
|
https://bugzilla.samba.org/show_bug.cgi?id=11529
|
|
|
|
Signed-off-by: Jeremy Allison <jra@samba.org>
|
|
Reviewed-by: David Disseldorp <ddiss@samba.org>
|
|
---
|
|
source3/modules/vfs_shadow_copy2.c | 47 ++++++++++++++++++++++++++++++++++++++
|
|
1 file changed, 47 insertions(+)
|
|
|
|
--- a/source3/modules/vfs_shadow_copy2.c
|
|
+++ b/source3/modules/vfs_shadow_copy2.c
|
|
@@ -21,6 +21,8 @@
|
|
|
|
#include "includes.h"
|
|
#include "smbd/smbd.h"
|
|
+#include "smbd/globals.h"
|
|
+#include "../libcli/security/security.h"
|
|
#include "system/filesys.h"
|
|
#include "ntioctl.h"
|
|
|
|
@@ -764,6 +766,43 @@ static int shadow_copy2_mkdir(vfs_handle
|
|
SHADOW2_NEXT(MKDIR, (handle, name, mode), int, -1);
|
|
}
|
|
|
|
+static bool check_access_snapdir(struct vfs_handle_struct *handle,
|
|
+ const char *path)
|
|
+{
|
|
+ struct smb_filename smb_fname;
|
|
+ int ret;
|
|
+ NTSTATUS status;
|
|
+ uint32_t access_granted = 0;
|
|
+
|
|
+ ZERO_STRUCT(smb_fname);
|
|
+ smb_fname.base_name = talloc_asprintf(talloc_tos(),
|
|
+ "%s",
|
|
+ path);
|
|
+ if (smb_fname.base_name == NULL) {
|
|
+ return false;
|
|
+ }
|
|
+
|
|
+ ret = SMB_VFS_NEXT_STAT(handle, &smb_fname);
|
|
+ if (ret != 0 || !S_ISDIR(smb_fname.st.st_ex_mode)) {
|
|
+ TALLOC_FREE(smb_fname.base_name);
|
|
+ return false;
|
|
+ }
|
|
+
|
|
+ status = smbd_check_open_rights(handle->conn,
|
|
+ &smb_fname,
|
|
+ SEC_DIR_LIST,
|
|
+ &access_granted);
|
|
+ if (!NT_STATUS_IS_OK(status)) {
|
|
+ DEBUG(0,("user does not have list permission "
|
|
+ "on snapdir %s\n",
|
|
+ smb_fname.base_name));
|
|
+ TALLOC_FREE(smb_fname.base_name);
|
|
+ return false;
|
|
+ }
|
|
+ TALLOC_FREE(smb_fname.base_name);
|
|
+ return true;
|
|
+}
|
|
+
|
|
static int shadow_copy2_rmdir(vfs_handle_struct *handle, const char *fname)
|
|
{
|
|
SHADOW2_NEXT(RMDIR, (handle, name), int, -1);
|
|
@@ -877,6 +916,7 @@ static int shadow_copy2_get_shadow_copy2
|
|
SMB_STRUCT_DIRENT *d;
|
|
TALLOC_CTX *tmp_ctx = talloc_new(handle->data);
|
|
char *snapshot;
|
|
+ bool ret;
|
|
|
|
snapdir = shadow_copy2_find_snapdir(tmp_ctx, handle);
|
|
if (snapdir == NULL) {
|
|
@@ -886,6 +926,13 @@ static int shadow_copy2_get_shadow_copy2
|
|
talloc_free(tmp_ctx);
|
|
return -1;
|
|
}
|
|
+ ret = check_access_snapdir(handle, snapdir);
|
|
+ if (!ret) {
|
|
+ DEBUG(0,("access denied on listing snapdir %s\n", snapdir));
|
|
+ errno = EACCES;
|
|
+ talloc_free(tmp_ctx);
|
|
+ return -1;
|
|
+ }
|
|
|
|
p = SMB_VFS_NEXT_OPENDIR(handle, snapdir, NULL, 0);
|
|
|