Permissions, Privileges, and Access Controls in bluez (Alpine package)

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU26047

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-0556

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper access control in subsystem for BlueZ. A remote attacker on the local network can gain elevated privileges on the target system and cause a denial of service (DoS) condition.

Mitigation

Install update from vendor's website.

Vulnerable software versions

bluez (Alpine package): 5.9-r0 - 5.49-r2

CPE2.3

• cpe:2.3:o:alpine:bluez_alpine_package:5.9-r0:*:*:*:*:alpine_linux:*:2.7
• cpe:2.3:o:alpine:bluez_alpine_package:5.18-r0:*:*:*:*:alpine_linux:*:3.0
• cpe:2.3:o:alpine:bluez_alpine_package:5.25-r0:*:*:*:*:alpine_linux:*:3.1

External links

https://git.alpinelinux.org/aports/commit/?id=1a09b72255fa939c293e1c8f2aee70d067aa6d74
https://git.alpinelinux.org/aports/commit/?id=d3acf50f550fefb42a5bc481cc8901633c09b839
https://git.alpinelinux.org/aports/commit/?id=e61670a8667332918c6a88a0f52c50aed9c1a0cd
https://git.alpinelinux.org/aports/commit/?id=f6fc58556f31047a3a3e540d2d37372b251eafaf
https://git.alpinelinux.org/aports/commit/?id=2e0d736af0229cda9d23b30f23f85ea7bbcc2686

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.