CVE-2023-51596

EUVD-2023-56308

03.05.2024, 03:16

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-20939.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.1 HIGH	ADJACENT_NETWORK	HIGH	NONE	CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
zdi	CNA	7.1 HIGH				CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 85%

Affected Products (NVD)

Vendor	Product	Version
bluez	bluez	5.66

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

bluez

bookworm	postponed
bookworm (security)	vulnerable
bullseye	postponed
bullseye (security)	vulnerable
buster	postponed
sid	vulnerable
trixie	vulnerable

Ubuntu Releases

Ubuntu Product

Codename

bluez

bionic	deferred
focal	deferred
jammy	deferred
noble	deferred
oracular	deferred
xenial	deferred

Common Weakness Enumeration

CWE-122 - Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1902/