CVE-2021-33828 : Security Advisory and Response
Discover the impact of CVE-2021-33828 on ownCloud's files_antivirus component. Learn about the vulnerability, affected systems, exploitation mechanism, and mitigation steps.
This CVE-2021-33828 article provides insights into a vulnerability in the files_antivirus component of ownCloud, impacting the protection mechanism for malicious files.
Understanding CVE-2021-33828
This section delves into the details of CVE-2021-33828 affecting ownCloud's files_antivirus component.
What is CVE-2021-33828?
The files_antivirus component before version 1.0.0 for ownCloud mishandles the protection mechanism meant to delete malicious files uploaded to a public share upon detection.
The Impact of CVE-2021-33828
This vulnerability exposes a flaw in file handling, allowing malicious files to evade automatic deletion, potentially leading to further security breaches.
Technical Details of CVE-2021-33828
Explore the technical aspects of CVE-2021-33828, revealing how it affects systems and the methods used for exploitation.
Vulnerability Description
The vulnerability in the files_antivirus component of ownCloud fails to promptly remove malicious files uploaded to public shares after their detection, opening avenues for persistent threats.
Affected Systems and Versions
All versions prior to 1.0.0 of the files_antivirus component in ownCloud are susceptible to this flaw, affecting systems using this feature.
Exploitation Mechanism
Exploiting this vulnerability involves uploading malicious files to public shares in the ownCloud environment and bypassing the intended file deletion mechanism.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks posed by CVE-2021-33828, ensuring your systems remain secure.
Immediate Steps to Take
Organizations should promptly update ownCloud to version 1.0.0 or newer to address this vulnerability and enhance file security measures.
Long-Term Security Practices
Establish robust file scanning and deletion protocols within ownCloud to prevent unauthorized files from persisting within the system.
Patching and Updates
Regularly monitor ownCloud security advisories and apply patches promptly to protect systems from known vulnerabilities.