CVE-2021-22949 : Exploit Details and Defense Strategies
Learn about CVE-2021-22949, a CSRF vulnerability in Concrete CMS version 8.5.5 and earlier that allows attackers to duplicate files, causing UI inconvenience and disk space exhaustion. Find out the impact, technical details, and mitigation steps.
A CSRF vulnerability in Concrete CMS version 8.5.5 and below has been identified, allowing attackers to duplicate files, leading to UI inconvenience and disk space exhaustion.
Understanding CVE-2021-22949
This CVE involves a Cross-Site Request Forgery (CSRF) vulnerability in Concrete CMS version 8.5.5 and earlier, which enables malicious actors to duplicate files.
What is CVE-2021-22949?
The CVE-2021-22949 refers to a CSRF vulnerability in Concrete CMS versions 8.5.5 and below, permitting unauthorized file duplication by attackers.
The Impact of CVE-2021-22949
This vulnerability may result in UI disruption and significant disk space consumption due to unauthorized file duplication.
Technical Details of CVE-2021-22949
The following technical aspects of CVE-2021-22949 provide more insight into the issue:
Vulnerability Description
The vulnerability allows attackers to perform CSRF attacks, leading to the duplication of files within the Concrete CMS environment.
Affected Systems and Versions
Concrete CMS versions 8.5.5 and below are affected by this CSRF vulnerability, necessitating an upgrade to version 8.5.6 for mitigation.
Exploitation Mechanism
By exploiting the CSRF vulnerability in Concrete CMS, threat actors can initiate unauthorized file duplication actions, causing potential disruption and resource depletion.
Mitigation and Prevention
To address CVE-2021-22949, the following actions can be taken:
Immediate Steps to Take
- Upgrade Concrete CMS to version 8.5.6 or higher to mitigate the CSRF vulnerability.
- Regularly monitor system activities for any signs of unauthorized file duplication.
Long-Term Security Practices
- Implement CSRF tokens and secure coding practices to prevent CSRF attacks in web applications.
- Conduct regular security audits and penetration testing to identify and address potential vulnerabilities.
Patching and Updates
Ensure timely installation of security patches and updates provided by Concrete CMS to safeguard the system against known vulnerabilities.