CVE-2021-42912 : Vulnerability Insights and Analysis

FiberHome ONU GPON AN5506-04-F RP2617 is affected by an OS command injection vulnerability that allows an attacker to execute commands as the root user.

Understanding CVE-2021-42912

What is CVE-2021-42912?

The CVE-2021-42912 vulnerability affects FiberHome ONU GPON AN5506-04-F RP2617, enabling logged-in attackers to run commands as the root user via the ping diagnostic tool.

The Impact of CVE-2021-42912

This vulnerability permits attackers to bypass the IP address field and inject OS commands, potentially leading to unauthorized access and control over the system.

Technical Details of CVE-2021-42912

Vulnerability Description

The vulnerability in FiberHome ONU GPON AN5506-04-F RP2617 allows attackers to execute commands as the root user by exploiting the ping diagnostic tool.

Affected Systems and Versions

Product: FiberHome ONU GPON AN5506-04-F RP2617
Vendor: FiberHome
Versions Affected: All versions

Exploitation Mechanism

Attackers bypass the IP address field of the ping diagnostic tool and insert malicious OS commands concatenated with a semicolon to execute them as the root user.

Mitigation and Prevention

Immediate Steps to Take

Monitor network activities for any suspicious behavior related to the ping diagnostic tool.
Implement strong access controls and authentication mechanisms.
Restrict the use of the ping diagnostic tool to authorized personnel only.

Long-Term Security Practices

Regularly update and patch the firmware of FiberHome ONU GPON AN5506-04-F RP2617.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Apply patches provided by FiberHome promptly to address the OS command injection vulnerability.