Vulnerability identifier: #VU61204
Vulnerability risk: Medium
CVSSv3.1: 8.1 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID:
CWE-ID:
CWE-284
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 gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to the use of the RSA algorithm without OAEP or any other padding scheme in telnetd_startup. A remote attacker on the local network can manipulate the various iterations of the telnetd startup state machine and eventually obtain a root shell on the device.
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
External links
http://www.tenable.com/security/research/tra-2022-01
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.