CVE-2021-27528 : Security Advisory and Response
Learn about CVE-2021-27528, a cross-site scripting vulnerability in DynPG version 4.9.2 that allows remote attackers to execute JavaScript via the "refID" parameter. Understand the impact and mitigation.
A cross-site scripting (XSS) vulnerability in DynPG version 4.9.2 allows remote attackers to inject JavaScript via the "refID" parameter.
Understanding CVE-2021-27528
This CVE-2021-27528 outlines a vulnerability in DynPG version 4.9.2 that enables malicious actors to execute cross-site scripting attacks through the "refID" parameter.
What is CVE-2021-27528?
CVE-2021-27528 is a security flaw in DynPG version 4.9.2 that allows remote attackers to inject and execute JavaScript code using the vulnerable "refID" parameter.
The Impact of CVE-2021-27528
The impact of this vulnerability is significant as it can lead to unauthorized access, data theft, and potentially complete system compromise for affected users of DynPG version 4.9.2.
Technical Details of CVE-2021-27528
This section covers the technical aspects of the CVE.
Vulnerability Description
The vulnerability in DynPG version 4.9.2 enables attackers to perform cross-site scripting attacks by manipulating the "refID" parameter, leading to the execution of malicious JavaScript code.
Affected Systems and Versions
DynPG version 4.9.2 is specifically affected by this security issue.
Exploitation Mechanism
Attackers exploit the vulnerability by injecting crafted JavaScript code into the "refID" parameter of DynPG version 4.9.2, allowing them to execute malicious scripts in the context of the user’s browser.
Mitigation and Prevention
To address CVE-2021-27528, users and administrators are advised to take the following steps.
Immediate Steps to Take
- Disable the affected "refID" parameter to prevent attacks.
- Implement input validation to sanitize user-generated content.
Long-Term Security Practices
- Regularly update DynPG to the latest version to patch known vulnerabilities.
- Educate users about safe browsing practices and the risks of executing untrusted scripts.
Patching and Updates
Ensure that all software dependencies, including DynPG, are consistently updated with the latest security patches to mitigate the risk of exploitation.