CVE-2021-42890 : What You Need to Know

TOTOLINK EX1200T V4.1.2cu.5215 has a remote command injection vulnerability that allows attackers to control hostTime to launch attacks.

Understanding CVE-2021-42890

This CVE involves a critical vulnerability in TOTOLINK EX1200T V4.1.2cu.5215, enabling remote attackers to execute arbitrary commands.

What is CVE-2021-42890?

The vulnerability in the NTPSyncWithHost function of the file system allows unauthorized control over hostTime, creating a security risk for the system.

The Impact of CVE-2021-42890

Exploitation of this vulnerability can lead to remote command execution, potentially compromising the affected system's integrity and confidentiality.

Technical Details of CVE-2021-42890

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability lies in the NTPSyncWithHost function in the file system.so, enabling remote command injection and unauthorized control over hostTime.

Affected Systems and Versions

Product: TOTOLINK EX1200T V4.1.2cu.5215
Vendor: TOTOLINK
Version: n/a

Exploitation Mechanism

Attackers can exploit this vulnerability through remote commands, manipulating hostTime to carry out malicious activities.

Mitigation and Prevention

Mitigation strategies and best practices to address CVE-2021-42890.

Immediate Steps to Take

Disable remote access to vulnerable services if not required.
Implement strong firewall rules to restrict unauthorized access.
Regularly monitor and analyze system logs for unusual activities.

Long-Term Security Practices

Conduct regular security assessments and vulnerability scans.
Keep systems and software up to date with the latest security patches.

Patching and Updates

Apply patches provided by the vendor to fix the vulnerability and enhance system security.