GHSA-gc5h-6jx9-q2qh eZ Platform Admin UI vulnerable to DOM-based Cross-site Scripting in file upload widget
Authenticated users can execute arbitrary scripts via DOM-based XSS in the file upload widget by tricking editors into uploading maliciously named files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is GHSA-gc5h-6jx9-q2qh?
GHSA-gc5h-6jx9-q2qh is a cross-site scripting vulnerability in ezsystems/ezplatform-admin-ui, published on 31 Jul 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Impact
The file upload widget is vulnerable to XSS payloads in filenames. Access permission to upload files is required. As such, in most cases only authenticated editors and administrators will have the required permission. It is not persistent, i.e. the payload is only executed during the upload. In effect, an attacker will have to trick an editor/administrator into uploading a strangely named file. The fix ensures XSS is escaped.
Patches
See "Patched versions". Commit: https://github.com/ezsystems/ezplatform-admin-ui/commit/7a9f991b200fa5a03d49cd07f50577c8bc90a30b
Workarounds
None.
References
- https://developers.ibexa.co/security-advisories/ibexa-sa-2024-004-dom-based-xss-in-file-upload
- https://github.com/ezsystems/ezplatform-admin-ui/commit/7a9f991b200fa5a03d49cd07f50577c8bc90a30b
- https://github.com/ibexa/admin-ui/security/advisories/GHSA-qm44-wjm2-pr59
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/
Which versions are affected by GHSA-gc5h-6jx9-q2qh?
2 open source packages ship an affected version, including ezsystems/ezplatform-admin-ui.
| Package | Affected | Fixed in |
|---|---|---|
ezsystems/ezplatform-admin-ui Packagist | From 3.3.0 | 3.3.39 |
ezsystems/ezplatform-admin-ui Packagist | From 3.3.0 | 3.3.39 |
How do I fix GHSA-gc5h-6jx9-q2qh?
Upgrade ezsystems/ezplatform-admin-ui to 3.3.39 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 GHSA-gc5h-6jx9-q2qh being exploited?
There is no known exploitation of GHSA-gc5h-6jx9-q2qh in the wild and no public exploit code.