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).
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: 2022-03-07T21:56:51
Updated: 2022-03-07T21:56:51
Reserved: 2022-02-15T00:00:00
Link: CVE-2022-25219
JSON object: View
NVD Information
Status : Analyzed
Published: 2022-03-10T17:47:02.457
Modified: 2023-08-08T14:22:24.967
Link: CVE-2022-25219
JSON object: View
Redhat Information
No data.
CWE