CVE-2021-44247 : Vulnerability Insights and Analysis

Totolink devices A3100R v4.1.2cu.5050_B20200504, A830R v5.9c.4729_B20191112, and A720R v4.1.5cu.470_B20200911 were discovered to contain a command injection vulnerability, allowing attackers to execute arbitrary commands.

Understanding CVE-2021-44247

This CVE involves command injection vulnerability in Totolink devices which can be exploited by attackers to run malicious commands.

What is CVE-2021-44247?

The vulnerability in the function setNoticeCfg in Totolink devices allows malicious actors to execute arbitrary commands through the IpFrom parameter.

The Impact of CVE-2021-44247

Attackers can remotely execute unauthorized commands on affected devices.
This vulnerability can lead to complete system compromise and unauthorized access.

Technical Details of CVE-2021-44247

In-depth technical information about the vulnerability in Totolink devices.

Vulnerability Description

Totolink devices A3100R v4.1.2cu.5050_B20200504, A830R v5.9c.4729_B20191112, and A720R v4.1.5cu.470_B20200911 contain a command injection flaw.

Affected Systems and Versions

Totolink A3100R v4.1.2cu.5050_B20200504
Totolink A830R v5.9c.4729_B20191112
Totolink A720R v4.1.5cu.470_B20200911

Exploitation Mechanism

Attackers exploit the vulnerability in the setNoticeCfg function to run arbitrary commands via the IpFrom parameter.

Mitigation and Prevention

Steps to mitigate and prevent the exploitation of CVE-2021-44247.

Immediate Steps to Take

Disable remote access to affected Totolink devices.
Apply vendor-provided patches and updates promptly.

Long-Term Security Practices

Regularly update firmware and software to address security vulnerabilities.
Implement network segmentation to restrict access to critical devices.

Patching and Updates

Check Totolink's official security advisories for patches.
Apply the latest firmware updates from Totolink to remediate the vulnerability.