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Ubuntu 18.04 LTS / 20.04 LTS : BlueZ vulnerabilities (USN-5155-1)

critical Nessus Plugin ID 155687

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5155-1 advisory.

 It was discovered that BlueZ incorrectly handled the Discoverable status when a device is powered down.
 This could result in devices being powered up discoverable, contrary to expectations. This issue only affected Ubuntu 20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)

 It was discovered that BlueZ incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause BlueZ to consume resources, leading to a denial of service.
 (CVE-2021-41229)

 It was discovered that the BlueZ gatt server incorrectly handled disconnects. A remote attacker could possibly use this issue to cause BlueZ to crash, leading to a denial of service. (CVE-2021-43400)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5155-1

Plugin Details

Severity: Critical

ID: 155687

File Name: ubuntu_USN-5155-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 11/23/2021

Updated: 8/28/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2021-43400

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:bluez-cups, p-cpe:/a:canonical:ubuntu_linux:bluez-tests, p-cpe:/a:canonical:ubuntu_linux:libbluetooth3, p-cpe:/a:canonical:ubuntu_linux:bluez-hcidump, p-cpe:/a:canonical:ubuntu_linux:libbluetooth-dev, p-cpe:/a:canonical:ubuntu_linux:bluez, p-cpe:/a:canonical:ubuntu_linux:bluetooth, p-cpe:/a:canonical:ubuntu_linux:bluez-obexd

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/23/2021

Vulnerability Publication Date: 11/4/2021

Reference Information

CVE: CVE-2021-3658, CVE-2021-41229, CVE-2021-43400

USN: 5155-1