Headline
GHSA-hvcf-6324-cjh7: Persistent Cross-site Scripting in Ibexa RichText Field Type
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
- See "Patched versions".
- https://github.com/ibexa/fieldtype-richtext/commit/59e9c1a9da60597f60cf7338bf289dccaa7e27ca (and follow-up https://github.com/ibexa/fieldtype-richtext/commit/0a3b830e8806d5169f697351fdc48ffd95a25c67)
Workarounds
None.
References
- Same issue in v3.3: https://github.com/ezsystems/ezplatform-richtext/security/advisories/GHSA-rhm7-7469-rcpw
- Ibexa advisory: https://developers.ibexa.co/security-advisories/ibexa-sa-2024-005-persistent-xss-in-richtext
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/
Package
composer ibexa/fieldtype-richtext (Composer)
Affected versions
>= 4.6.0, < 4.6.10
Patched versions
4.6.10
Description
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
- See "Patched versions".
- ibexa/fieldtype-richtext@59e9c1a (and follow-up ibexa/fieldtype-richtext@0a3b830)
Workarounds
None.
References
- Same issue in v3.3: GHSA-rhm7-7469-rcpw
- Ibexa advisory: https://developers.ibexa.co/security-advisories/ibexa-sa-2024-005-persistent-xss-in-richtext
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/
References
- GHSA-rhm7-7469-rcpw
- GHSA-hvcf-6324-cjh7
- ibexa/fieldtype-richtext@0a3b830
- ibexa/fieldtype-richtext@59e9c1a
- https://developers.ibexa.co/security-advisories/ibexa-sa-2024-005-persistent-xss-in-richtext
glye published to ibexa/fieldtype-richtext
Aug 14, 2024
Published to the GitHub Advisory Database
Aug 14, 2024
Reviewed
Aug 14, 2024
Last updated
Aug 14, 2024