GHSA-h58v-c6rf-g9f7
Cross site scripting in the system log
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | contao/core-bundle | >= 4.5.0, < 4.9.16 | 4.9.16 |
| Packagist | contao/core-bundle | >= 4.10.0, < 4.11.5 | 4.11.5 |
| Packagist | contao/contao | >= 4.5.0, < 4.9.16 | 4.9.16 |
| Packagist | contao/contao | >= 4.10.0, < 4.11.5 | 4.11.5 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
It is possible to inject code into the `tl_log` table that will be executed in the browser when the system log is called in the back end.
### Patches
Update to Contao 4.9.16 or 4.11.5.
### Workarounds
Disable the system log module in the back end for all users (especially admin users).
### References
https://contao.org/en/security-advisories/cross-site-scripting-in-the-system-log-2021
### For more information
If you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).
References
External links from the advisory. They lead to third-party sites.
- https://github.com/contao/contao/security/advisories/GHSA-h58v-c6rf-g9f7
- https://nvd.nist.gov/vuln/detail/CVE-2021-35210
- https://contao.org/en/security-advisories/cross-site-scripting-in-the-system-log-2021.html
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2021-35210.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2021-35210.yaml
- https://github.com/contao/contao