CVE-2021-33211 Explained : Impact and Mitigation
Learn about CVE-2021-33211, a Directory Traversal vulnerability in Elements-IT HTTP Commander 5.3.3, allowing remote authenticated users to write files to arbitrary directories. Find out the impact, technical details, and mitigation steps.
A Directory Traversal vulnerability in the Unzip feature in Elements-IT HTTP Commander 5.3.3 allows remote authenticated users to write files to arbitrary directories via relative paths in ZIP archives.
Understanding CVE-2021-33211
This CVE refers to a Directory Traversal vulnerability in the Unzip feature of Elements-IT HTTP Commander 5.3.3, which enables authenticated remote users to manipulate file paths in ZIP archives.
What is CVE-2021-33211?
CVE-2021-33211 is a security flaw that exists in the Unzip functionality of Elements-IT HTTP Commander 5.3.3. It allows attackers with remote authentication to deposit files in any directory by exploiting relative paths present in ZIP archives.
The Impact of CVE-2021-33211
Exploitation of this vulnerability could lead to unauthorized file writing in arbitrary directories on the server. Attackers can abuse this flaw to compromise the integrity and confidentiality of data stored on the system.
Technical Details of CVE-2021-33211
The technical details of CVE-2021-33211 include the Vulnerability Description, Affected Systems and Versions, and the Exploitation Mechanism.
Vulnerability Description
The vulnerability in Unzip feature of Elements-IT HTTP Commander 5.3.3 provides a gateway for authenticated remote users to write files to any location by utilizing relative paths inside ZIP files.
Affected Systems and Versions
This vulnerability affects Elements-IT HTTP Commander version 5.3.3.
Exploitation Mechanism
By manipulating relative paths in ZIP archives, remote authenticated users can abuse the Unzip feature to write files to arbitrary directories on the server.
Mitigation and Prevention
Understanding how to mitigate and prevent CVE-2021-33211 is critical to ensure the security of your systems.
Immediate Steps to Take
Immediately update Elements-IT HTTP Commander to a secure version that patches this vulnerability. Limit access to the application to authorized users only.
Long-Term Security Practices
Regularly monitor for security updates and patches for the software. Implement strong access control measures and conduct regular security audits to identify and address vulnerabilities.
Patching and Updates
Stay informed about security advisories from the vendor. Apply patches and updates promptly to address known security issues.