Multiple vulnerabilities in Eufy eufyCam 2

Published: 2021-10-13

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-21940 CVE-2021-21941
CWE-ID	CWE-122 CWE-416
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	eufyCam 2 Hardware solutions / Security hardware applicances
Vendor	Eufy

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU57328

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21940

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the pushMuxer processRtspInfo functionality. A remote attacker can send a specially crafted packet, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

eufyCam 2: 2.1.6.9h

External links

http://talosintelligence.com/vulnerability_reports/TALOS-2021-1369

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.

2) Use-after-free

EUVDB-ID: #VU57329