Debian DSA-4951-1 : bluez - security update

high Nessus Plugin ID 152271

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4951 advisory.

Several vulnerabilities were discovered in Bluez, the Linux Bluetooth protocol stack. CVE-2020-26558 / CVE-2021-0129 It was discovered that Bluez does not properly check permissions during pairing operation, which could allow an attacker to impersonate the initiating device. CVE-2020-27153 Jay LV discovered a double free flaw in the disconnect_cb() routine in the gattool. A remote attacker can take advantage of this flaw during service discovery for denial of service, or potentially, execution of arbitrary code. For the stable distribution (buster), these problems have been fixed in version 5.50-1.2~deb10u2. 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

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the bluez packages.

For the stable distribution (buster), these problems have been fixed in version 5.50-1.2~deb10u2.

Plugin Details

Severity: High

ID: 152271

File Name: debian_DSA-4951.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 8/8/2021

Updated: 1/24/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2020-27153

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bluez-hcidump, p-cpe:/a:debian:debian_linux:bluetooth, p-cpe:/a:debian:debian_linux:bluez, p-cpe:/a:debian:debian_linux:bluez-obexd, p-cpe:/a:debian:debian_linux:libbluetooth-dev, p-cpe:/a:debian:debian_linux:bluez-test-tools, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:bluez-test-scripts, p-cpe:/a:debian:debian_linux:libbluetooth3, p-cpe:/a:debian:debian_linux:bluez-cups

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/7/2021

Vulnerability Publication Date: 10/15/2020

Reference Information

CVE: CVE-2020-26558, CVE-2020-27153, CVE-2021-0129

Detections

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