CVE-2020-9737 : Vulnerability Insights and Analysis

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-2020-9737

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 are affected by a stored XSS vulnerability.

What is CVE-2020-9737?

This CVE refers to a stored XSS vulnerability in AEM that enables users with access to the Content Repository Development Environment to store malicious scripts in specific node fields, which can be executed when the vulnerable field is accessed.

The Impact of CVE-2020-9737

CVSS Base Score: 6.8 (Medium Severity)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: Required
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Scope: Unchanged
The vulnerability poses a significant risk to confidentiality, integrity, and availability, requiring user interaction for exploitation.

Technical Details of CVE-2020-9737

Adobe Experience Manager (AEM) is susceptible to stored XSS attacks due to inadequate input validation.

Vulnerability Description

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.
Attackers can store malicious scripts in specific node fields accessible to users with Content Repository Development Environment access.

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

Attackers with access to the Content Repository Development Environment can input malicious scripts into vulnerable fields.
When a user accesses a page containing the compromised field, the script may execute in their browser.

Mitigation and Prevention

Immediate Steps to Take:

Update AEM to the latest patched version.
Restrict access to the Content Repository Development Environment.

Long-Term Security Practices:

Regularly monitor and audit AEM for vulnerabilities.
Educate users on secure coding practices.

Patching and Updates:

Apply security patches provided by Adobe promptly to mitigate the vulnerability.