8.8
HIGH
CVE-2021-42912
FiberHome ONU GPON AN5506 RP2617 OS Command Injection Vulnerability
Description

FiberHome ONU GPON AN5506-04-F RP2617 is affected by an OS command injection vulnerability. This vulnerability allows the attacker, once logged in, to send commands to the operating system as the root user via the ping diagnostic tool, bypassing the IP address field, and concatenating OS commands with a semicolon.

INFO

Published Date :

Dec. 16, 2021, 5:15 p.m.

Last Modified :

Nov. 7, 2023, 3:39 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-42912 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fiberhome an5506-01-a_firmware
2 Fiberhome an5506-01-b_firmware
3 Fiberhome an5506-02-b_firmware
4 Fiberhome an5506-04-b_firmware
5 Fiberhome an5506-04-f_firmware
6 Fiberhome aan5506-04-g2g_firmware
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-2021-42912.

URL Resource
http://fiberhome.com Broken Link
http://onu.com Not Applicable
https://medium.com/%40windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2

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).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-42912 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-42912 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
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://medium.com/%40windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2 [No types assigned]
    Removed Reference MITRE https://medium.com/@windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2
  • Initial Analysis by [email protected]

    Dec. 22, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://fiberhome.com No Types Assigned http://fiberhome.com Broken Link
    Changed Reference Type http://onu.com No Types Assigned http://onu.com Not Applicable
    Changed Reference Type https://medium.com/@windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2 No Types Assigned https://medium.com/@windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2 Exploit, Third Party Advisory
    Added CWE NIST CWE-78
    Added CPE Configuration AND OR *cpe:2.3:o:fiberhome:an5506-01-a_firmware:rp0509:*:*:*:*:*:*:* OR cpe:2.3:h:fiberhome:an5506-01-a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:fiberhome:an5506-01-b_firmware:rp2610:*:*:*:*:*:*:* OR cpe:2.3:h:fiberhome:an5506-01-b:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:fiberhome:an5506-02-b_firmware:rp2520:*:*:*:*:*:*:* *cpe:2.3:o:fiberhome:an5506-02-b_firmware:rp2521:*:*:*:*:*:*:* *cpe:2.3:o:fiberhome:an5506-02-b_firmware:rp2603:*:*:*:*:*:*:* OR cpe:2.3:h:fiberhome:an5506-02-b:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:fiberhome:an5506-04-b_firmware:rp2510:*:*:*:*:*:*:* OR cpe:2.3:h:fiberhome:an5506-04-b:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:fiberhome:an5506-04-f_firmware:rp2617:*:*:*:*:*:*:* OR cpe:2.3:h:fiberhome:an5506-04-f:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:fiberhome:aan5506-04-g2g_firmware:rp2560:*:*:*:*:*:*:* OR cpe:2.3:h:fiberhome:an5506-04-g2g:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-42912 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.86 }} -1.53%

score

0.80335

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability