CVE-2024-43369 Persistent Cross-site Scripting in Ibexa RichText Field Type
Attackers with editing permissions can inject malicious scripts via links in rich text fields due to case-sensitive blocklisting, leading to persistent XSS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-43369?
CVE-2024-43369 is a high-severity cross-site scripting vulnerability in ibexa fieldtype-richtext, published on 15 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Ibexa RichText Field Type is a Field Type for supporting rich formatted text stored in a structured XML format. In versions on the 4.6 branch prior to 4.6.10, 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. Version 4.6.10 contains a patch for this issue. No known workarounds are available.
Weakness: CWE-79
Which versions are affected by CVE-2024-43369?
2 open source packages ship an affected version, including ibexa/fieldtype-richtext.
| Package | Affected | Fixed in |
|---|---|---|
ibexa/fieldtype-richtext Packagist | From 4.6.0 | 4.6.10 |
ibexa/fieldtype-richtext Packagist | From 4.6.0 | 4.6.10 |
How do I fix CVE-2024-43369?
Upgrade ibexa/fieldtype-richtext to 4.6.10 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2024-43369 being exploited?
There is no known exploitation of CVE-2024-43369 in the wild and no public exploit code.
Sources
Also known as CVE-2024-43372, GHSA-hvcf-6324-cjh7.