Impact
The validator for the RichText fieldtype blocklists javascript: and vbscript: in links to prevent XSS. This can leave other options open, and the check can be circumvented using upper case. Content editing permissions for RichText content is required to exploit this vulnerability, which typically means Editor role or higher. The fix implements an allowlist instead, which allows only approved link protocols. The new check is case insensitive.
Patches
Workarounds
None.
References
Credit
This vulnerability was discovered and reported to Ibexa by Alec Romano: https://github.com/4rdr
We thank them for reporting it responsibly to us.
How to report security issues:
https://doc.ibexa.co/en/latest/infrastructure_and_maintenance/security/reporting_issues/
Impact
The validator for the RichText fieldtype blocklists
javascript:andvbscript:in links to prevent XSS. This can leave other options open, and the check can be circumvented using upper case. Content editing permissions for RichText content is required to exploit this vulnerability, which typically means Editor role or higher. The fix implements an allowlist instead, which allows only approved link protocols. The new check is case insensitive.Patches
Workarounds
None.
References
Credit
This vulnerability was discovered and reported to Ibexa by Alec Romano: https://github.com/4rdr
We thank them for reporting it responsibly to us.
How to report security issues:
https://doc.ibexa.co/en/latest/infrastructure_and_maintenance/security/reporting_issues/