diff mbox series

[pyro] bluez5: fix out-of-bounds access in SDP server (CVE-2017-1000250)

Message ID 20170913191208.5379-1-ross.burton@intel.com
State Accepted
Commit 7351e0b260876b9bbc8660c2bb4173ab4c130f8b
Headers show
Series [pyro] bluez5: fix out-of-bounds access in SDP server (CVE-2017-1000250) | expand

Commit Message

Ross Burton Sept. 13, 2017, 7:12 p.m. UTC 
All versions of the SDP server in BlueZ 5.46 and earlier are vulnerable to an
information disclosure vulnerability which allows remote attackers to obtain
sensitive information from the bluetoothd process memory. This vulnerability
lies in the processing of SDP search attribute requests.

Signed-off-by: Ross Burton <ross.burton@intel.com>

---
 meta/recipes-connectivity/bluez5/bluez5.inc        |  1 +
 .../bluez5/bluez5/cve-2017-1000250.patch           | 34 ++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 meta/recipes-connectivity/bluez5/bluez5/cve-2017-1000250.patch

-- 
2.11.0

-- 
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diff mbox series

Patch

diff --git a/meta/recipes-connectivity/bluez5/bluez5.inc b/meta/recipes-connectivity/bluez5/bluez5.inc
index ccb10aaad9a..882873a486e 100644
--- a/meta/recipes-connectivity/bluez5/bluez5.inc
+++ b/meta/recipes-connectivity/bluez5/bluez5.inc
@@ -24,6 +24,7 @@  SRC_URI = "\
     file://run-ptest \
     ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '', 'file://0001-Allow-using-obexd-without-systemd-in-the-user-sessio.patch', d)} \
     file://0001-tests-add-a-target-for-building-tests-without-runnin.patch \
+    file://cve-2017-1000250.patch \
 "
 S = "${WORKDIR}/bluez-${PV}"
 
diff --git a/meta/recipes-connectivity/bluez5/bluez5/cve-2017-1000250.patch b/meta/recipes-connectivity/bluez5/bluez5/cve-2017-1000250.patch
new file mode 100644
index 00000000000..9fac961bcf6
--- /dev/null
+++ b/meta/recipes-connectivity/bluez5/bluez5/cve-2017-1000250.patch
@@ -0,0 +1,34 @@ 
+All versions of the SDP server in BlueZ 5.46 and earlier are vulnerable to an
+information disclosure vulnerability which allows remote attackers to obtain
+sensitive information from the bluetoothd process memory. This vulnerability
+lies in the processing of SDP search attribute requests.
+
+CVE: CVE-2017-1000250
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From 9e009647b14e810e06626dde7f1bb9ea3c375d09 Mon Sep 17 00:00:00 2001
+From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
+Date: Wed, 13 Sep 2017 10:01:40 +0300
+Subject: sdp: Fix Out-of-bounds heap read in service_search_attr_req function
+
+Check if there is enough data to continue otherwise return an error.
+---
+ src/sdpd-request.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/sdpd-request.c b/src/sdpd-request.c
+index 1eefdce..318d044 100644
+--- a/src/sdpd-request.c
++++ b/src/sdpd-request.c
+@@ -917,7 +917,7 @@ static int service_search_attr_req(sdp_req_t *req, sdp_buf_t *buf)
+ 	} else {
+ 		/* continuation State exists -> get from cache */
+ 		sdp_buf_t *pCache = sdp_get_cached_rsp(cstate);
+-		if (pCache) {
++		if (pCache && cstate->cStateValue.maxBytesSent < pCache->data_size) {
+ 			uint16_t sent = MIN(max, pCache->data_size - cstate->cStateValue.maxBytesSent);
+ 			pResponse = pCache->data;
+ 			memcpy(buf->data, pResponse + cstate->cStateValue.maxBytesSent, sent);
+-- 
+cgit v1.1