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CVE-2022-25218

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 10-03-2022 06:47
Last modified: - 17-03-2022 08:21
Total changes: - 2

Description

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).

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
High
Attack complexity
Network
Attack vector
High
Availability
High
Confidentiality
High
Integrity
None
Privileges required
Unchanged
Scope
None
User interaction
8.1
Base score
2.2
5.9
Exploitability score
Impact score
 

Verification logic

OR
AND
OR
vendor=phicomm AND product=k2_firmware AND versionEndIncluding=22.5.9.163
OR
vendor=phicomm AND product=k2 AND version=-
AND
OR
vendor=phicomm AND product=k3_firmware AND versionEndIncluding=21.5.37.246
OR
vendor=phicomm AND product=k3 AND version=-
AND
OR
vendor=phicomm AND product=k3c_firmware AND versionEndIncluding=32.1.15.93
OR
vendor=phicomm AND product=k3c AND version=-
AND
OR
vendor=phicomm AND product=k2g_firmware AND versionEndIncluding=22.6.3.20
OR
vendor=phicomm AND product=k2g AND version=-
AND
OR
vendor=phicomm AND product=k2p_firmware AND versionEndIncluding=20.4.1.7
OR
vendor=phicomm AND product=k2p AND version=-
 

Reference

 


Keywords

NVD

 

CVE-2022-25218

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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