Understanding and Mitigating CVE-2024-20760: Adobe Experience Manager XSS Vulnerability

Published on: 08-02-2024 By Soc Team

Understanding CVE-2024-20760: Adobe Experience Manager XSS Vulnerability

CVE-2024-20760 identifies a severe stored Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager versions 6.5.19 and earlier. This vulnerability allows attackers to inject malicious JavaScript into vulnerable form fields, which can then be executed in a user's browser when they visit the affected page.

Details of the Vulnerability

According to Adobe's advisory, the XSS vulnerability exists in the file:

/libs/granite/ui/components/coral/foundation/clientlibs/foundation/js/collection/selectall/selectall.js

The vulnerability has been assigned a CVSS score of 5.4 (Medium), indicating its potential impact on systems:

  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None

Impacts and Exploitation

This stored XSS can have several detrimental effects:

  • Exfiltration of sensitive information from user's sessions.
  • Manipulation of web content displayed to users.
  • Execution of arbitrary actions within the context of the victim's session.

Mitigation Strategies

It is crucial to address this vulnerability promptly to prevent potential exploitation. Here are the recommended mitigation steps:

1. Upgrade to the Latest Version:
Adobe has likely addressed this vulnerability in a later release. Upgrading to a version higher than 6.5.19 is the most effective way to mitigate this risk.

2. Implement Security Patches:
Apply any security patches released by Adobe for Adobe Experience Manager. Regularly check for updates to ensure you are protected against the latest vulnerabilities.

3. Input Validation:
Implement rigorous input validation on form fields to ensure that no malicious scripts can be injected. Use libraries or frameworks that automatically escape potentially dangerous characters.

4. Content Security Policy (CSP):
Configure a Content Security Policy (CSP) to restrict the execution of scripts from untrusted sources. This can help in minimizing the impact of any XSS vulnerability.

5. Regular Security Audits:
Conduct regular security assessments and audits of your web applications to identify and mitigate potential vulnerabilities.

Conclusion

CVE-2024-20760 is a critical vulnerability in Adobe Experience Manager that requires immediate attention. By understanding the nature of this XSS vulnerability and implementing the recommended mitigation strategies, you can safeguard your systems and protect user data effectively.

Stay vigilant and proactive in your vulnerability management practices to ensure a secure web environment.

For further details, refer to the official Adobe advisory.