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).
                
            Metrics
Affected Vendors & Products
Advisories
    | Source | ID | Title | 
|---|---|---|
  EUVD | 
                EUVD-2022-29918 | 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). | 
Fixes
    Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
        | Link | Providers | 
|---|---|
| https://www.tenable.com/security/research/tra-2022-01 | 
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History
                    No history.
Status: PUBLISHED
Assigner: tenable
Published:
Updated: 2024-08-03T04:36:05.791Z
Reserved: 2022-02-15T00:00:00
Link: CVE-2022-25219
No data.
Status : Modified
Published: 2022-03-10T17:47:02.457
Modified: 2024-11-21T06:51:49.703
Link: CVE-2022-25219
No data.
                        OpenCVE Enrichment
                    No data.
 EUVD