#VU97651 Improper access control in BlueZ - CVE-2024-8805

Vulnerability identifier: #VU97651

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-8805

CWE-ID: CWE-284

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 gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions within the implementation of the HID over GATT Profile. A remote attacker on the local network can bypass implemented security restrictions and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BlueZ: All versions

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External links
https://www.zerodayinitiative.com/advisories/ZDI-24-1229/
https://patchwork.kernel.org/project/bluetooth/patch/20240912204458.3037144-1-luiz.dentz@gmail.com/
https://www.zerodayinitiative.com/advisories/ZDI-24-1647/

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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.