CVE-2022-25217
Cisco Telnetd Hard-Coded Private Key Vulnerability
Description
Use of a hard-coded cryptographic key pair by the telnetd_startup service allows an attacker on the local area network to obtain a root shell on the device over telnet. The builds of telnetd_startup included in the version 22.5.9.163 of the K2 firmware, and version 32.1.15.93 of the K3C firmware (possibly amongst many other releases) included both the private and public RSA keys. The remaining versions cited here redacted the private key, but left the public key unchanged. An attacker in possession of the leaked private key may, through a scripted exchange of UDP packets, instruct telnetd_startup to spawn an unauthenticated telnet shell as root, by means of which they can then obtain complete control of the device. A consequence of the limited availablility of firmware images for testing is that models and versions not listed here may share this vulnerability.
INFO
Published Date :
March 10, 2022, 5:47 p.m.
Last Modified :
March 17, 2022, 7:21 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-25217.
| URL | Resource |
|---|---|
| https://www.tenable.com/security/research/tra-2022-01 | Exploit Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-25217 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-25217 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Mar. 17, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://www.tenable.com/security/research/tra-2022-01 No Types Assigned https://www.tenable.com/security/research/tra-2022-01 Exploit, Third Party Advisory Added CWE NIST CWE-798 Added CPE Configuration AND OR *cpe:2.3:o:phicomm:k2_firmware:*:*:*:*:*:*:*:* versions up to (including) 22.5.9.163 OR cpe:2.3:h:phicomm:k2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:phicomm:k3c_firmware:*:*:*:*:*:*:*:* versions up to (including) 32.1.15.93 OR cpe:2.3:h:phicomm:k3c:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-25217 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-25217
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.21750
percentile