CVE-2021-21880 : What You Need to Know
Learn about CVE-2021-21880, a directory traversal vulnerability affecting Lantronix PremierWave 2050 8.9.0.0R4. Understand the impact, technical details, and mitigation steps for this high-severity CVE.
This article provides an overview of CVE-2021-21880, a directory traversal vulnerability affecting Lantronix PremierWave 2050 8.9.0.0R4, allowing for local file inclusion.
Understanding CVE-2021-21880
CVE-2021-21880 is a high-severity vulnerability impacting Lantronix PremierWave 2050 8.9.0.0R4, potentially leading to unauthorized access via a specially-crafted HTTP request.
What is CVE-2021-21880?
The vulnerability lies in the Web Manager FsCopyFile function of Lantronix PremierWave 2050 8.9.0.0R4, enabling an attacker to exploit directory traversal to include local files.
The Impact of CVE-2021-21880
With a CVSS base score of 7.2, CVE-2021-21880 poses a high risk, allowing attackers to compromise confidentiality, integrity, and availability by sending malicious HTTP requests.
Technical Details of CVE-2021-21880
CVE-2021-21880's specifics cover vulnerability description, affected systems, versions, and exploitation methods.
Vulnerability Description
The vulnerability in Lantronix PremierWave 2050 8.9.0.0R4 enables attackers to perform local file inclusion through a specially-crafted HTTP request.
Affected Systems and Versions
CVE-2021-21880 affects Lantronix PremierWave 2050 8.9.0.0R4, particularly when the Web Manager FsCopyFile function is exploited.
Exploitation Mechanism
Attackers can trigger CVE-2021-21880 with authenticated HTTP requests, exploiting directory traversal to include local files.
Mitigation and Prevention
To address CVE-2021-21880, immediate steps should be taken alongside long-term security practices and timely patching.
Immediate Steps to Take
Organizations and users are advised to apply security patches promptly, restrict network access, and monitor for unauthorized activities.
Long-Term Security Practices
Implement network segmentation, least privilege access policies, regularly update security controls, and conduct security awareness training to enhance overall security posture.
Patching and Updates
Vendor-supplied patches should be applied without delay to mitigate the risks associated with CVE-2021-21880.