Multiple vulnerabilities in BlueZ

Published: 2022-06-20 | Updated: 2022-09-29

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-39177 CVE-2022-39176
CWE-ID	CWE-20 CWE-211
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	BlueZ Universal components / Libraries / Libraries used by multiple products
Vendor	BlueZ Project

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU64523

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-39177

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to insufficient validation of user-supplied input when handling the A2DP profile in profiles/audio/avdtp.c. A remote attacker can pass specially crafted data to the system and execute arbitrary code.

Mitigation

Install update from vendor's website.

Vulnerable software versions

BlueZ: 5.40 - 5.58

External links

http://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1977968

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.

2) Information exposure through externally-generated error message

EUVDB-ID: #VU67750

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-39176

CWE-ID: CWE-211 - Externally-generated error message containing sensitive information

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application while handling error conditions within profiles/audio/avrcp.c. A remote attacker on the local network can obtain sensitive information on the system.