#VU84605 Heap-based buffer overflow in BlueZ - CVE-2023-50229

Vulnerability identifier: #VU84605

Vulnerability risk: Medium

CVSSv4.0: 4.4 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-50229

CWE-ID: CWE-122

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
BlueZ
Universal components / Libraries / Libraries used by multiple products

Vendor: BlueZ Project

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the handling of the Phone Book Access profile. A remote attacker on the local network can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BlueZ: 5.0 - 5.70

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External links
https://www.zerodayinitiative.com/advisories/ZDI-23-1811/
https://github.com/bluez/bluez/commit/5ab5352531a9cc7058cce569607f3a6831464443

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.