Vulnerability identifier: #VU15694

Vulnerability risk: Medium

CVSSv3.1: 7.8 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-3934

CWE-ID: CWE-592

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Yi Home Camera
Hardware solutions / Firmware

Vendor: YI Technology

Description
The vulnerability allows a remote attacker to bypass authentication on the target system.

The vulnerability exists due to a logic flaw in the firmware update functionality during insufficient sanitization of user-supplied data. A remote attacker can sniff network traffic and send a set of UDP packets to bypass authentication and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to the latest version.

Vulnerable software versions

Yi Home Camera: 27US 1.8.7.0D

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External links
http://talosintelligence.com/vulnerability_reports/TALOS-2018-0601

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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