Unauthenticated file upload in Mitel MiCollab

1) Arbitrary file upload

EUVDB-ID: #VU68540

Risk: Critical

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41326

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to missing authorization checks and insufficient validation of files during file upload. A remote non-authenticated attacker can upload a malicious file to the server and execute it.

Successful exploitation of the vulnerability may allow an attacker to compromise the entire system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MiCollab: 9.6 - 9.6.105

External links

http://www.mitel.com/support/security-advisories/mitel-product-security-advisory-22-0009
http://www.mitel.com/-/media/mitel/file/pdf/support/security-advisories/security-bulletin_22-0009-001-v1.pdf

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.