CVE-2022-25219

A null byte interaction error has been discovered in the code that the telnetd_startup daemon uses to construct a pair of ephemeral passwords that allow a user to spawn a telnet service on the router, and to ensure that the telnet service persists upon reboot. By means of a crafted exchange of UDP packets, an unauthenticated attacker on the local network can leverage this null byte interaction error in such a way as to make those ephemeral passwords predictable (with 1-in-94 odds). Since the attacker must manipulate data processed by the OpenSSL function RSA_public_decrypt(), successful exploitation of this vulnerability depends on the use of an unpadded RSA cipher (CVE-2022-25218).

CVSS v3.0 8.4 HIGH
CVSS v2.0 6.9 MEDIUM

8.4^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

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 12:10

NVD link : CVE-2022-25219

Mitre link : CVE-2022-25219

JSON object : View

CWE

CWE-436

Interpretation Conflict

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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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