CVE-2022-25218

The use of the RSA algorithm without OAEP, or any other padding scheme, in telnetd_startup, allows an unauthenticated attacker on the local area network to achieve a significant degree of control over the "plaintext" to which an arbitrary blob of ciphertext will be decrypted by OpenSSL's RSA_public_decrypt() function. This weakness allows the attacker to manipulate the various iterations of the telnetd startup state machine and eventually obtain a root shell on the device, by means of an exchange of crafted UDP packets. In all versions but K2 22.5.9.163 and K3C 32.1.15.93 a successful attack also requires the exploitation of a null-byte interaction error (CVE-2022-25219).

CVSS v3.0 8.1 HIGH
CVSS v2.0 9.3 HIGH

8.1^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.tenable.com/security/research/tra-2022-01	Exploit Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:phicomm:k2_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:phicomm:k2:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:phicomm:k3_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:phicomm:k3:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:phicomm:k3c_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:phicomm:k3c:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:phicomm:k2g_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:phicomm:k2g:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:o:phicomm:k2p_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:phicomm:k2p:-:*:*:*:*:*:*:*

Information

Published : 2022-03-10 09:47

Updated : 2022-03-17 12:21

NVD link : CVE-2022-25218

Mitre link : CVE-2022-25218

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

phicomm

k2g
k2p
k2p_firmware
k3c_firmware
k2_firmware
k3_firmware
k2g_firmware
k2
k3c
k3

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