CVE-2020-9738 : Security Advisory and Response

A stored XSS vulnerability in Adobe Experience Manager (AEM) versions 6.5.5.0 and below, 6.4.8.1 and below, 6.3.3.8 and below, and 6.2 SP1-CFP20 and below allows malicious scripts to be stored in certain node fields, potentially leading to script execution in victims' browsers.

Understanding CVE-2020-9738

This CVE involves a stored XSS vulnerability in Adobe Experience Manager (AEM) versions.

What is CVE-2020-9738?

AEM versions 6.5.5.0 and below, 6.4.8.1 and below, 6.3.3.8 and below, and 6.2 SP1-CFP20 and below are affected by a stored XSS vulnerability that enables the execution of malicious scripts in victims' browsers.

The Impact of CVE-2020-9738

The vulnerability has a CVSS base score of 6.8, with high impacts on confidentiality, integrity, and availability. It requires high privileges and user interaction for exploitation.

Technical Details of CVE-2020-9738

This section provides technical details of the vulnerability.

Vulnerability Description

The vulnerability allows users with access to AEM's Content Repository Development Environment to store malicious scripts in specific node fields, leading to potential script execution in victims' browsers.

Affected Systems and Versions

Adobe Experience Manager (AEM) versions 6.5.5.0 and below
Adobe Experience Manager (AEM) versions 6.4.8.1 and below
Adobe Experience Manager (AEM) versions 6.3.3.8 and below
Adobe Experience Manager (AEM) versions 6.2 SP1-CFP20 and below

Exploitation Mechanism

The vulnerability allows users to input malicious scripts into certain node fields within AEM, which can then be executed when a victim accesses the page containing the vulnerable field.

Mitigation and Prevention

Protecting systems from CVE-2020-9738 is crucial to prevent potential exploitation.

Immediate Steps to Take

Apply patches provided by Adobe to address the vulnerability.
Restrict access to the Content Repository Development Environment to authorized personnel only.
Regularly monitor and audit the content stored in AEM to detect any malicious scripts.

Long-Term Security Practices

Conduct regular security training for personnel with access to AEM to raise awareness of XSS vulnerabilities.
Implement content security policies to mitigate the risk of script execution in browsers.

Patching and Updates

Ensure timely installation of security patches released by Adobe for AEM to address known vulnerabilities.