CVE-2020-9743 : Security Advisory and Response

A detailed overview of CVE-2020-9743, an HTML injection vulnerability in Adobe Experience Manager (AEM).

Understanding CVE-2020-9743

What is CVE-2020-9743?

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 an HTML injection vulnerability in the content editor component. This vulnerability allows unauthenticated users to insert arbitrary HTML code into parameter values, potentially leading to malicious actions like phishing.

The Impact of CVE-2020-9743

The CVSS base score for this vulnerability is 5.3, categorizing it as a medium severity issue. The attack complexity is low, and the integrity impact is rated as low.

Technical Details of CVE-2020-9743

Vulnerability Description

The vulnerability in AEM's content editor component enables attackers to include malicious HTML code in HTTP requests, exploiting unauthenticated users to perform unsafe actions.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can craft HTTP requests with arbitrary HTML code, tricking users into executing unsafe actions on the affected page.

Mitigation and Prevention

Immediate Steps to Take

Apply the security patch provided by Adobe to fix the vulnerability.
Monitor for any suspicious activities on the affected systems.

Long-Term Security Practices

Regularly update AEM to the latest version to prevent known vulnerabilities.
Educate users on safe browsing practices to mitigate the risk of falling victim to phishing attacks.

Patching and Updates

Ensure timely installation of security patches and updates from Adobe to address vulnerabilities like HTML injection in AEM's content editor component.