Permissions, Privileges, and Access Controls in BlueZ - CVE-2020-0556

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Main Vulnerability Database Vulnerabilities #VU26047

Permissions, Privileges, and Access Controls in BlueZ - CVE-2020-0556

Published: March 12, 2020


Vulnerability identifier: #VU26047
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-0556
CWE-ID: CWE-264
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper access control in subsystem for BlueZ. A remote attacker on the local network can gain elevated privileges on the target system and cause a denial of service (DoS) condition.


Affected software

BlueZ
Gentoo Linux
Arch Linux
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server
Anolis OS
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Opensuse
openEuler
bluez (Alpine package)
bluez (Ubuntu package)
bluez (Debian package)
bluez (Red Hat package)
bluez
bluez-cups
bluez-debuginfo
bluez-debugsource
bluez-devel
bluez-help
bluez-libs
bluez-doc
bluez-obexd
bluez-libs-devel
bluez-hid2hci
bluez-mesh

How to mitigate CVE-2020-0556

Install updates from vendor's website.

BlueZ - update to 5.53
bluez (Alpine package) - update to 5.49-r3
bluez (Ubuntu package) - addressed in versions 5.37-0ubuntu5.3, 5.48-0ubuntu3.4, 5.50-0ubuntu5.1
bluez (Debian package) - update to 5.43-2+deb9u2
bluez (Red Hat package) - addressed in versions 5.44-7.el7, 5.50-4.el8
bluez - addressed in versions 5.50-8, 5.54-13
bluez-cups - addressed in versions 5.50-8, 5.54-13
bluez-debuginfo - addressed in versions 5.50-8, 5.54-13
bluez-debugsource - addressed in versions 5.50-8, 5.54-13
bluez-devel - addressed in versions 5.50-8, 5.54-13
bluez-help - addressed in versions 5.50-8, 5.54-13
bluez-libs - addressed in versions 5.50-8, 5.54-13
bluez-doc - addressed in versions 5.63-3.0.1, 5.71-1
bluez-obexd - addressed in versions 5.63-3.0.1, 5.71-1
bluez-libs-devel - addressed in versions 5.63-3.0.1, 5.71-1
bluez-libs - addressed in versions 5.63-3.0.1, 5.71-1
bluez-hid2hci - addressed in versions 5.63-3.0.1, 5.71-1
bluez-cups - addressed in versions 5.63-3.0.1, 5.71-1
bluez - addressed in versions 5.63-3.0.1, 5.71-1
bluez-mesh - update to 5.71-1

External References

Related Security Bulletins