CVE-2021-21085 : What You Need to Know

Adobe Connect version 11.0.7 and earlier is affected by a CSV injection vulnerability in the export feature. An attacker can inject a payload into an online event form, leading to potential code execution on the victim's local machine.

Understanding CVE-2021-21085

This CVE entry describes a significant issue with Adobe Connect that could allow attackers to execute arbitrary code on a victim's machine through a CSV injection vulnerability.

What is CVE-2021-21085?

CVE-2021-21085 is an Input Validation vulnerability in Adobe Connect's export feature that affects version 11.0.7 and earlier. Attackers can exploit this flaw by inserting a payload into an online event form, enabling them to execute malicious code when the victim exports and accesses the data.

The Impact of CVE-2021-21085

The impact of this vulnerability is classified as high, with a base score of 7.8 according to the CVSS v3.1 scoring system. It affects confidentiality, integrity, and availability, with no special privileges required for exploitation.

Technical Details of CVE-2021-21085

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper input validation in Adobe Connect version 11.0.7 and earlier, enabling attackers to inject malicious payloads and execute arbitrary code on victim machines.

Affected Systems and Versions

Adobe Connect versions up to 11.0.7 are affected by this CSV injection vulnerability, making them susceptible to exploitation.

Exploitation Mechanism

Attackers leveraging this vulnerability inject payloads into online event forms in Adobe Connect, leading to code execution when the exported data is accessed by victims.

Mitigation and Prevention

Protecting systems from CVE-2021-21085 requires immediate action and long-term security measures.

Immediate Steps to Take

Upgrade Adobe Connect to the latest secure version to mitigate the vulnerability.
Avoid exporting or opening CSV files from untrusted sources.

Long-Term Security Practices

Regularly update and patch Adobe Connect to address known security issues promptly.
Educate users on safe data handling practices to prevent exposure to potential exploits.

Patching and Updates

Stay informed about security advisories from Adobe, and apply recommended patches promptly to ensure protection against known vulnerabilities.