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Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE-2024-43369

High
7.2/10

Summary

The validator for the RichText field type blocklists 'javascript:' and 'vbscript:' in links to prevent Cross-Site Scripting (XSS). This can leave other options open, and the check can be circumvented using the upper case. Content editing permissions for RichText content are required to exploit this vulnerability, which typically means an Editor role or higher. The fix implements an allowlist instead, which allows only approved link protocols. The new check is case-insensitive. This issue affects ibexa/fieldtype-richtext versions v4.0.0-beta1 through v4.6.9 and ezsystems/ezplatform-richtext versions through v2.3.23 and v4.0.0-alpha1 through v4.0.2.

  • LOW
  • NETWORK
  • LOW
  • CHANGED
  • NONE
  • NONE
  • LOW
  • NONE

CWE-79 - Cross Site Scripting

Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.

References

Advisory Timeline

  • Published