Vulnerability identifier: #VU64674

Vulnerability risk: Critical

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-29499

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MiVoice Connect
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Mitel

Description

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

The vulnerability exists due to improper input validation in the Mitel Service Appliance component of MiVoice Connect (Mitel Service Appliances – SA 100, SA 400, and Virtual SA). A remote unauthenticated attacker can send a specially crafted HTTP GET request to the application and execute arbitrary OS commands on the target system.

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

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MiVoice Connect: 14.2 - 19.2 SP3

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External links
http://www.mitel.com/support/security-advisories/mitel-product-security-advisory-22-0002
http://www.bleepingcomputer.com/news/security/mitel-zero-day-used-by-hackers-in-suspected-ransomware-attack/
http://www.mitel.com/-/media/mitel/file/pdf/support/security-advisories/security-bulletin_22-0002-001-v2.pdf

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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?

Yes. This vulnerability is being exploited in the wild.