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).
References
Link | Resource |
---|---|
https://www.tenable.com/security/research/tra-2022-01 | Exploit Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: tenable
Published: 2022-03-07T21:50:25
Updated: 2022-03-07T21:50:25
Reserved: 2022-02-15T00:00:00
Link: CVE-2022-25218
JSON object: View
NVD Information
Status : Analyzed
Published: 2022-03-10T17:47:02.133
Modified: 2023-08-08T14:22:24.967
Link: CVE-2022-25218
JSON object: View
Redhat Information
No data.
CWE