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CVE-2021-21883 : Security Advisory and Response

Discover the critical CVE-2021-21883 impacting Lantronix PremierWave 2050 8.9.0.0R4. Learn about its severity, impact, affected systems, exploitation, and mitigation measures to safeguard your infrastructure.

A critical OS command injection vulnerability has been identified in Lantronix PremierWave 2050 8.9.0.0R4, potentially allowing an attacker to execute arbitrary commands by sending a specially-crafted HTTP request. This CVE has a CVSS base score of 9.9, indicating a severe risk to affected systems.

Understanding CVE-2021-21883

This section delves into the details of the CVE-2021-21883 vulnerability.

What is CVE-2021-21883?

The CVE-2021-21883 vulnerability involves an OS command injection flaw in the Web Manager Diagnostics: Ping functionality of Lantronix PremierWave 2050 8.9.0.0R4. An attacker with authenticated access can exploit this issue by sending malicious HTTP requests.

The Impact of CVE-2021-21883

With a CVSS base score of 9.9, CVE-2021-21883 is assessed as critical due to its high severity in terms of confidentiality, integrity, and availability impact. This vulnerability poses a significant risk to the security of affected systems.

Technical Details of CVE-2021-21883

Explore the technical aspects surrounding CVE-2021-21883 to better understand its implications.

Vulnerability Description

The vulnerability stems from improper neutralization of special elements in an OS command, leading to command injection. Specifically, the Ping functionality in Lantronix PremierWave 2050 8.9.0.0R4 is susceptible to this form of attack.

Affected Systems and Versions

Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU) is confirmed to be affected by this OS command injection vulnerability, potentially exposing systems running this version to exploitation.

Exploitation Mechanism

By crafting a malicious HTTP request, an attacker can trigger the command injection flaw in Lantronix PremierWave 2050 8.9.0.0R4. This unauthorized execution of commands can result in severe consequences.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2021-21883.

Immediate Steps to Take

To address the CVE-2021-21883 vulnerability, it is advised to restrict network access and apply security patches promptly. Additionally, monitoring for any suspicious activities can help detect potential exploitation attempts.

Long-Term Security Practices

Implementing strong access controls, regular security audits, and employee training on recognizing phishing attempts can enhance the overall security posture of the system and prevent future vulnerabilities.

Patching and Updates

Keep systems up to date with the latest patches released by Lantronix to address the CVE-2021-21883 vulnerability and enhance the security resilience of the infrastructure.

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