6.5 Medium
CVSS3
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.3 Low
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
27.5%
Debian LTS Advisory DLA-2827-1 [email protected]
https://www.debian.org/lts/security/ Sylvain Beucler
November 27, 2021 https://wiki.debian.org/LTS
Package : bluez
Version : 5.43-2+deb9u5
CVE ID : CVE-2019-8921 CVE-2019-8922 CVE-2021-41229
Debian Bug : 1000262
Several vulnerabilities were discovered in BlueZ, the Linux Bluetooth
protocol stack. An attacker could cause a denial-of-service (DoS) or
leak information.
CVE-2019-8921
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.
CVE-2019-8922
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.
CVE-2021-41229
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.
For Debian 9 stretch, these problems have been fixed in version
5.43-2+deb9u5.
We recommend that you upgrade your bluez packages.
For the detailed security status of bluez please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/bluez
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 9 | arm64 | bluez-test-tools | < 5.43-2+deb9u5 | bluez-test-tools_5.43-2+deb9u5_arm64.deb |
Debian | 10 | arm64 | bluez-test-tools | < 5.50-1.2~deb10u3 | bluez-test-tools_5.50-1.2~deb10u3_arm64.deb |
Debian | 9 | arm64 | libbluetooth3 | < 5.43-2+deb9u5 | libbluetooth3_5.43-2+deb9u5_arm64.deb |
Debian | 10 | armhf | bluez-obexd | < 5.50-1.2~deb10u3 | bluez-obexd_5.50-1.2~deb10u3_armhf.deb |
Debian | 10 | amd64 | libbluetooth-dev | < 5.50-1.2~deb10u3 | libbluetooth-dev_5.50-1.2~deb10u3_amd64.deb |
Debian | 10 | all | bluez | < 5.50-1.2~deb10u3 | bluez_5.50-1.2~deb10u3_all.deb |
Debian | 10 | i386 | libbluetooth3 | < 5.50-1.2~deb10u3 | libbluetooth3_5.50-1.2~deb10u3_i386.deb |
Debian | 9 | arm64 | bluez-hcidump | < 5.43-2+deb9u5 | bluez-hcidump_5.43-2+deb9u5_arm64.deb |
Debian | 9 | armel | bluez-test-tools | < 5.43-2+deb9u5 | bluez-test-tools_5.43-2+deb9u5_armel.deb |
Debian | 9 | arm64 | bluez-obexd | < 5.43-2+deb9u5 | bluez-obexd_5.43-2+deb9u5_arm64.deb |
6.5 Medium
CVSS3
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.3 Low
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
27.5%