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<define-tag description>LTS security update</define-tag>
<define-tag moreinfo>
<p>Several vulnerabilities were discovered in BlueZ, the Linux Bluetooth
protocol stack. An attacker could cause a denial-of-service (DoS) or
leak information.</p>
<ul>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2019-8921">CVE-2019-8921</a>
<p>SDP infoleak, the vulnerability lies in the handling of a
SVC_ATTR_REQ by the SDP implementation of BlueZ. By crafting a
malicious CSTATE, it is possible to trick the server into
returning more bytes than the buffer actually holds, resulting in
leaking arbitrary heap data.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2019-8922">CVE-2019-8922</a>
<p>SDP Heap Overflow; this vulnerability lies in the SDP protocol
handling of attribute requests as well. By requesting a huge
number of attributes at the same time, an attacker can overflow
the static buffer provided to hold the response.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2021-41229">CVE-2021-41229</a>
<p>sdp_cstate_alloc_buf allocates memory which will always be hung in
the singly linked list of cstates and will not be freed. This will
cause a memory leak over time. The data can be a very large
object, which can be caused by an attacker continuously sending
sdp packets and this may cause the service of the target device to
crash.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2021-43400">CVE-2021-43400</a>
<p>A use-after-free in gatt-database.c can occur when a client
disconnects during D-Bus processing of a WriteValue call.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2022-0204">CVE-2022-0204</a>
<p>A heap overflow vulnerability was found in bluez. An attacker with
local network access could pass specially crafted files causing an
application to halt or crash, leading to a denial of service.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2022-39176">CVE-2022-39176</a>
<p>BlueZ allows physically proximate attackers to obtain sensitive
information because profiles/audio/avrcp.c does not validate
params_len.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2022-39177">CVE-2022-39177</a>
<p>BlueZ allows physically proximate attackers to cause a denial of
service because malformed and invalid capabilities can be
processed in profiles/audio/avdtp.c.</p></li>
</ul>
<p>For Debian 10 buster, these problems have been fixed in version
5.50-1.2~deb10u3.</p>
<p>We recommend that you upgrade your bluez packages.</p>
<p>For the detailed security status of bluez please refer to
its security tracker page at:
<a href="https://security-tracker.debian.org/tracker/bluez">https://security-tracker.debian.org/tracker/bluez</a></p>
<p>Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <a href="https://wiki.debian.org/LTS">https://wiki.debian.org/LTS</a></p>
</define-tag>
# do not modify the following line
#include "$(ENGLISHDIR)/lts/security/2022/dla-3157.data"
# $Id: $
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