1 All versions of the SDP server in BlueZ 5.46 and earlier are vulnerable to an
2 information disclosure vulnerability which allows remote attackers to obtain
3 sensitive information from the bluetoothd process memory. This vulnerability
4 lies in the processing of SDP search attribute requests.
7 Upstream-Status: Backport
8 Signed-off-by: Ross Burton <ross.burton@intel.com>
10 From 9e009647b14e810e06626dde7f1bb9ea3c375d09 Mon Sep 17 00:00:00 2001
11 From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
12 Date: Wed, 13 Sep 2017 10:01:40 +0300
13 Subject: sdp: Fix Out-of-bounds heap read in service_search_attr_req function
15 Check if there is enough data to continue otherwise return an error.
17 src/sdpd-request.c | 2 +-
18 1 file changed, 1 insertion(+), 1 deletion(-)
20 diff --git a/src/sdpd-request.c b/src/sdpd-request.c
21 index 1eefdce..318d044 100644
22 --- a/src/sdpd-request.c
23 +++ b/src/sdpd-request.c
24 @@ -917,7 +917,7 @@ static int service_search_attr_req(sdp_req_t *req, sdp_buf_t *buf)
26 /* continuation State exists -> get from cache */
27 sdp_buf_t *pCache = sdp_get_cached_rsp(cstate);
29 + if (pCache && cstate->cStateValue.maxBytesSent < pCache->data_size) {
30 uint16_t sent = MIN(max, pCache->data_size - cstate->cStateValue.maxBytesSent);
31 pResponse = pCache->data;
32 memcpy(buf->data, pResponse + cstate->cStateValue.maxBytesSent, sent);