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CVE-2021-21080 : What You Need to Know

Learn about CVE-2021-21080, a reflected Cross-Site Scripting (XSS) vulnerability affecting Adobe Connect versions 11.0.7 and earlier. Find out the impact, technical details, and mitigation steps.

Adobe Connect version 11.0.7 and earlier have been found to be vulnerable to a reflected Cross-Site Scripting (XSS) attack. This vulnerability could allow an attacker to inject malicious JavaScript into the victim's browser when they visit a compromised page.

Understanding CVE-2021-21080

This section will provide insight into the nature and impact of the Adobe Connect XSS vulnerability.

What is CVE-2021-21080?

CVE-2021-21080 refers to a reflected Cross-Site Scripting vulnerability impacting Adobe Connect versions 11.0.7 and below. This vulnerability enables attackers to execute malicious scripts within a victim's browser context.

The Impact of CVE-2021-21080

The XSS vulnerability in Adobe Connect could be exploited by malicious actors to implant and execute JavaScript code on a user's browser without their consent. This could lead to sensitive information disclosure or unauthorized actions being performed.

Technical Details of CVE-2021-21080

In this section, we delve into the specifics of the vulnerability, including affected systems, exploitation mechanisms, and more.

Vulnerability Description

The vulnerability in Adobe Connect allows attackers to insert and execute malicious JavaScript code in the victim's browser by exploiting a reflected XSS flaw.

Affected Systems and Versions

Adobe Connect versions equal to or earlier than 11.0.7 are susceptible to this reflected XSS vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious script code into a query parameter, which, when processed by the application, gets executed in the victim's browser.

Mitigation and Prevention

This section focuses on the steps to mitigate the risk associated with CVE-2021-21080 and prevent potential exploits.

Immediate Steps to Take

Users are advised to update Adobe Connect to a non-vulnerable version, such as 11.0.8 or above, to mitigate the risk of exploitation from this XSS vulnerability.

Long-Term Security Practices

Implementing strict input validation and output encoding practices in web applications can help prevent XSS attacks like CVE-2021-21080.

Patching and Updates

Regularly applying security patches and updates released by Adobe for Adobe Connect can help in addressing known vulnerabilities and enhancing overall security posture.

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