Information disclosure in BlueZ



Published: 2021-06-10 | Updated: 2022-09-29
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3588
CWE-ID CWE-125
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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BlueZ
Universal components / Libraries / Libraries used by multiple products

Vendor BlueZ Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU67751

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-2021-3588

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the cli_feat_read_cb() function in src/gatt-database.c. A remote attacker on the local network can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BlueZ: 5.0 - 5.55

External links

http://github.com/bluez/bluez/issues/70


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.



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