Improper Certificate Validation in Ubiquiti Networks EdgeOS



Published: 2021-05-24
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-22909
CWE-ID CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
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EdgeOS
Operating systems & Components / Operating system

EdgeRouter X
Hardware solutions / Routers & switches, VoIP, GSM, etc

EdgeRouter Pro X SFP
Hardware solutions / Routers & switches, VoIP, GSM, etc

EdgeRouter 10X
Hardware solutions / Routers & switches, VoIP, GSM, etc

EdgePoint 6-port
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Ubiquiti Networks

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper Certificate Validation

EUVDB-ID: #VU53426

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22909

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to improper certificate verification within the downloading of firmware files via HTTPS. A remote attacker can perform a MitM attack on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EdgeOS: 2.0.9

EdgeRouter X: All versions

EdgeRouter Pro X SFP: All versions

EdgeRouter 10X: All versions

EdgePoint 6-port: All versions

External links

http://www.zerodayinitiative.com/advisories/ZDI-21-601/
http://community.ui.com/releases/Security-Advisory-Bulletin-018-018/cfa1566b-4bf8-427b-8cc7-8cffba3a93a4


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.



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