From: Jeremy Allison <jra@samba.org>
Date: Tue, 5 Jan 2016 19:24:36 +0000 (-0800)
Subject: CVE-2015-7560: s3: smbd: Refuse to get a POSIX ACL on a symlink.
X-Git-Tag: samba-4.1.23~26
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3875621cec2b0a301be976331ade51baa087b68;p=thirdparty%2Fsamba.git

CVE-2015-7560: s3: smbd: Refuse to get a POSIX ACL on a symlink.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11648

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
---

diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c
index 5b008f53eb2..3fca8f2e2cc 100644
--- a/source3/smbd/trans2.c
+++ b/source3/smbd/trans2.c
@@ -5058,6 +5058,13 @@ NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 				uint16 num_file_acls = 0;
 				uint16 num_def_acls = 0;
 
+				status = refuse_symlink(conn,
+						fsp,
+						smb_fname->base_name);
+				if (!NT_STATUS_IS_OK(status)) {
+					return status;
+				}
+
 				if (fsp && fsp->fh->fd != -1) {
 					file_acl = SMB_VFS_SYS_ACL_GET_FD(fsp,
 						talloc_tos());