Persistent Cross-site Scripting in Ibexa RichText Field Type
The advisory, in context
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/
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
From 4.6.0 before 4.6.10
Fixed in 4.6.10
10 explicitly affected versions
v4.6.0, v4.6.1, v4.6.2, v4.6.3, v4.6.4, v4.6.5, v4.6.6, v4.6.7, v4.6.8, v4.6.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.6.0"
},
{
"fixed": "4.6.10"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v4.6.0",
"v4.6.1",
"v4.6.2",
"v4.6.3",
"v4.6.4",
"v4.6.5",
"v4.6.6",
"v4.6.7",
"v4.6.8",
"v4.6.9"
]
}References
- https://github.com/ezsystems/ezplatform-richtext/security/advisories/GHSA-rhm7-7469-rcpw
- https://github.com/ibexa/fieldtype-richtext/security/advisories/GHSA-hvcf-6324-cjh7
- https://nvd.nist.gov/vuln/detail/CVE-2024-43369
- https://github.com/ibexa/fieldtype-richtext/commit/0a3b830e8806d5169f697351fdc48ffd95a25c67
- https://github.com/ibexa/fieldtype-richtext/commit/59e9c1a9da60597f60cf7338bf289dccaa7e27ca
- https://developers.ibexa.co/security-advisories/ibexa-sa-2024-005-persistent-xss-in-richtext
- https://github.com/ibexa/fieldtype-richtext