CVE-2021-4250 : What You Need to Know
Discover the impact of CVE-2021-4250, a denial of service vulnerability in cgriego active_attr up to version 0.15.2. Learn about affected systems, exploitation, and mitigation steps.
A vulnerability has been discovered in cgriego active_attr up to version 0.15.2 that allows for a denial of service attack. The issue lies in the 'call' function of the file 'boolean_typecaster.rb' within the 'Regex Handler' component. Upgrading to version 0.15.3, with the patch identifier 'dab95e5843b01525444b82bd7b336ef1d79377df', is recommended to mitigate this vulnerability.
Understanding CVE-2021-4250
This section provides insights into the nature and impact of the CVE-2021-4250 vulnerability.
What is CVE-2021-4250?
The vulnerability in cgriego active_attr up to version 0.15.2 allows attackers to trigger a denial of service by manipulating the argument value in the 'call' function of the 'boolean_typecaster.rb' file.
The Impact of CVE-2021-4250
The impact of CVE-2021-4250 is the potential for a denial of service attack due to the vulnerability in the specified component and versions.
Technical Details of CVE-2021-4250
In this section, we delve into the technical aspects of the CVE-2021-4250 vulnerability.
Vulnerability Description
The vulnerability allows for a denial of service attack by manipulating the argument value in the 'call' function of the 'boolean_typecaster.rb' file.
Affected Systems and Versions
Systems using cgriego active_attr versions up to 0.15.2, specifically within the 'Regex Handler' component, are affected by this vulnerability.
Exploitation Mechanism
The exploitation involves manipulating the argument value in the 'call' function to trigger a denial of service attack.
Mitigation and Prevention
This section outlines the steps to mitigate and prevent exploitation of the CVE-2021-4250 vulnerability.
Immediate Steps to Take
Immediate action involves upgrading the affected component to version 0.15.3, which contains the necessary patch (dab95e5843b01525444b82bd7b336ef1d79377df).
Long-Term Security Practices
In the long term, ensuring timely software updates and patches can help prevent similar vulnerabilities from being exploited.
Patching and Updates
Regularly applying patches and updates recommended by the software vendor is crucial to maintaining the security of the system.