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CVE-2023-27349: BlueZ Bluetooth service can let attackers run code

CVE-2023-27349 · published 2 years ago

Summary

The BlueZ Bluetooth stack used in Debian and other Linux systems can be tricked into running malicious code when a device connects to a specially crafted Bluetooth device. An attacker nearby could cause the software to execute commands with full system privileges. Apply the latest BlueZ updates from your distribution and avoid pairing with unknown Bluetooth devices.

What to do

Update debian bluez to version 5.66-1+deb12u2.
Update debian bluez to version 5.68-1.

Affected software

Ecosystem	Vendor	Product	Affected versions
Debian:12	debian	bluez	< 5.66-1+deb12u2 Fix: upgrade to 5.66-1+deb12u2
Debian:13	debian	bluez	< 5.68-1 Fix: upgrade to 5.68-1
Debian:14	debian	bluez	< 5.68-1 Fix: upgrade to 5.68-1
–	bluez	bluez	5.66 `cpe:2.3:a:bluez:bluez:5.66:::::::*`

Original advisory text

BlueZ Audio Profile AVRCP Improper Validation of Array Index Remote Code Execution Vulnerability

BlueZ Audio Profile AVRCP Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code via Bluetooth on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious device. The specific flaw exists within the handling of the AVRCP protocol. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-19908.

References

https://security-tracker.debian.org/tracker/CVE-2023-27349 Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/05/msg00015.html URL
https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html URL
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=f54299a850676d92c3... Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-386/ Vendor Advisory
https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/27xxx/CVE-2023-27349... Vendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2023-27349 Vendor Advisory

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker full control

Severity

8.0 High

Exploitation

1% chance of attack within 30 days

Type

CWE-129Improper Validation of Array Index

Timeline

Published3 May 2024

Updated4 Nov 2026

First seen15 Sep 2026

Sources

DEBIAN-CVE-2023-27349 · OSV

CVE-2023-27349 · NVD

CVE-2023-27349 · OSV

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