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Fencer Vulns
high 7.1

CVE-2023-50229 json

BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability

published 2024-05-03 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-55051

cvss
7.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device.

The specific flaw exists within the handling of the Phone Book Access profile. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20936.

Patch / fix

  • bluez bluez 5.70
  • bluez Debian 12 5.66-1+deb12u2
  • bluez Debian 14, Debian 13 5.70-1

debian advisories DEBIAN-CVE-2023-50229

  • bluez Ubuntu 20.04 LTS 5.53-0ubuntu3.9
  • bluez Ubuntu 22.04 LTS 5.64-0ubuntu1.4

ubuntu advisories UBUNTU-CVE-2023-50229

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • bluez RHEL 9 5.72-2.el9
  • bluez-cups RHEL 9 5.72-2.el9
  • bluez-libs RHEL 9 5.72-2.el9
  • bluez-obexd RHEL 9 5.72-2.el9

red hat advisories RHSA-2024:9413

  • bluez SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +7 more 5.62-150400.4.19.1
  • bluez SLE Workstation Extension 15 SP5, SLE Module for Desktop Applications 15 SP5, SLE Module for Basesystem 15 SP5 +2 more 5.65-150500.3.6.1
  • bluez SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.55-150300.3.28.1
  • bluez SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS 5.48-150200.13.30.1
  • bluez SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 5.48-150000.5.54.1

suse advisories SUSE-SU-2024:0204-1SUSE-SU-2024:0183-1SUSE-SU-2024:0182-1SUSE-SU-2024:0167-1SUSE-SU-2024:0166-1

  • bluez AlmaLinux 9 5.72-2.el9
  • bluez-cups AlmaLinux 9 5.72-2.el9
  • bluez-libs AlmaLinux 9 5.72-2.el9
  • bluez-obexd AlmaLinux 9 5.72-2.el9

almalinux advisories ALSA-2024:9413

  • bluez Rocky Linux 9 5.72-2.el9

rocky linux advisories RLSA-2024:9413

  • bluez Azure Linux 3.0 5.63-5
  • bluez CBL-Mariner 2.0 5.63-6

azure linux advisories AZL-40217AZL-40267

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-50229 updated cvss 7.1

bluez: phone book access profile heap-based buffer overflow remote code execution vulnerability

  • Red Hat Enterprise Linux 6 bluez, bluez-alsa, bluez-cups, bluez-libs, bluez-compat, bluez-gstreamer Red Hat Enterprise Linux 7 bluez, bluez-cups, bluez-libs, bluez-hid2hci
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 bluez, bluez-cups, bluez-libs, bluez-obexd, bluez-hid2hci
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 9) bluez 5.72-2.el9, bluez-cups 5.72-2.el9, bluez-libs 5.72-2.el9, bluez-obexd 5.72-2.el9 Red Hat Enterprise Linux AppStream (v. 9) bluez 5.72-2.el9, bluez-cups 5.72-2.el9, bluez-libs 5.72-2.el9, bluez-obexd 5.72-2.el9 Red Hat Enterprise Linux BaseOS (v. 9) bluez 5.72-2.el9, bluez-cups 5.72-2.el9, bluez-libs 5.72-2.el9, bluez-obexd 5.72-2.el9
    fixed: vendor fix RHSA-2024:9413
  • Red Hat Enterprise Linux 10 bluez, bluez-cups, bluez-libs, bluez-obexd
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

2.29% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.1 CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.0 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • BlueZ BlueZ

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.