Vulnerability identifier: #VU61206

Vulnerability risk: Medium

CVSSv3.1: 7.6 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2022-25219

CWE-ID: CWE-158

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
K2
Hardware solutions / Routers & switches, VoIP, GSM, etc
K3
Hardware solutions / Routers & switches, VoIP, GSM, etc
K3C
Hardware solutions / Routers & switches, VoIP, GSM, etc
K2 A7
Hardware solutions / Routers & switches, VoIP, GSM, etc
K2G A1
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: PHICOMM

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a null byte interaction error in the code that the telnetd_startup daemon uses to construct a pair of ephemeral passwords. A remote attacker on the local network can use specially crafted UDP packets and make those ephemeral passwords predictable.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

K2: 22.5.9.163

K3: 21.5.37.246

K3C: 32.1.15.93 - 33.1.25.177

K2 A7: 22.6.506.28

K2G A1: 22.6.3.20

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External links
http://www.tenable.com/security/research/tra-2022-01

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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