#VU79524 Memory leak in BlueZ - CVE-2021-41229

Vulnerability identifier: #VU79524

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-41229

CWE-ID: CWE-401

Exploitation vector: Local

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 perform DoS attack on the target system.

The vulnerability exists due memory leak in sdp_cstate_alloc_buf() function. A remote attacker can send specially crafted packets to the device and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BlueZ: 5.58

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External links
https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq
https://lists.debian.org/debian-lts-announce/2021/11/msg00022.html
https://security.netapp.com/advisory/ntap-20211203-0004/
https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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