Improper Authentication in Huawei Band 2 and Honor Band 3

1) Improper Authentication

EUVDB-ID: #VU22779

Risk: Low

CVSSv4.0: 5.2 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-5218

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass authentication process.

The vulnerability exists due to the band does not sufficiently authenticate the device try to connect to it in certain scenario. An attacker on adjacent network can fake certain credential, spoof the band, then connect to it and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Product Name	Affected Version	Resolved Product and Version
Huawei Band 2	Versions earlier than Eris-B19/Eris-B29 1.2.53	Eris-B19/Eris-B29 1.2.53
Honor Band 3	Versions earlier than NYX-B10HN 1.5.53	NYX-B10HN 1.5.53

Vulnerable software versions

Huawei Band 2: All versions

Honor Band 3: All versions

CPE2.3

• cpe:2.3:a:huawei:huawei_band_2:*:*:*:*:*:*:*:*
• cpe:2.3:a:huawei:honor_band_3:*:*:*:*:*:*:*:*

External links

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191106-01-band-en

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.