CVE-2020-25768: Input Validation
First published: Thu Sep 24 2020(Updated: )
### Impact It is possible to inject insert tags in front end forms which will be replaced when the page is rendered. ### Patches Update to Contao 4.4.52, 4.9.6 or 4.10.1. ### Workarounds Disable the front end login form and do not use form fields with array keys such as `fieldname[]`. ### References https://contao.org/en/security-advisories/insert-tag-injection-in-forms ### 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).
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/contao/core-bundle | >=4.0.0<4.4.52>=4.5.0<4.6.0>=4.6.0<4.7.0>=4.7.0<4.8.0>=4.8.0<4.9.0>=4.9.0<4.9.6>=4.10.0<4.10.1 | |
| composer/contao/contao | >=4.0.0<4.4.52>=4.5.0<4.6.0>=4.6.0<4.7.0>=4.7.0<4.8.0>=4.8.0<4.9.0>=4.9.0<4.9.6>=4.10.0<4.10.1 | |
| Contao Contao | >=4.0<4.4.52 | |
| Contao Contao | >=4.9.0<4.9.6 | |
| Contao Contao | >=4.10.0<4.10.1 | |
| composer/contao/core-bundle | >=4.10.0<4.10.1 | 4.10.1 |
| composer/contao/contao | >=4.10.0<4.10.1 | 4.10.1 |
| composer/contao/contao | >=4.5.0<4.9.6 | 4.9.6 |
| composer/contao/contao | >=4.0.0<4.4.52 | 4.4.52 |
| composer/contao/core-bundle | >=4.5.0<4.9.6 | 4.9.6 |
| composer/contao/core-bundle | >=4.0.0<4.4.52 | 4.4.52 |
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Reference Links
- https://contao.org/en/security-advisories/insert-tag-injection-in-forms.html
- https://community.contao.org/en/forumdisplay.php?4-Announcements
- https://github.com/contao/contao/security/advisories/GHSA-f7wm-x4gw-6m23
- https://nvd.nist.gov/vuln/detail/CVE-2020-25768
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2020-25768.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2020-25768.yaml
- https://github.com/advisories/GHSA-f7wm-x4gw-6m23 (Advisory)
Frequently Asked Questions
What is CVE-2020-25768?
CVE-2020-25768 is a vulnerability that allows for insert tag injection in front end forms in Contao.
What is the impact of CVE-2020-25768?
The impact of CVE-2020-25768 is the ability to inject insert tags in frontend forms, which will be replaced when the page is rendered.
How severe is CVE-2020-25768?
CVE-2020-25768 has a severity rating of medium (5.3).
How can I fix CVE-2020-25768?
To fix CVE-2020-25768, update to Contao 4.4.52, 4.9.6, or 4.10.1.
Are there any workarounds for CVE-2020-25768?
Yes, you can disable the front end login form and avoid using form fields with array keys such as 'fieldname[]'.
- collector/friends-of-php
- collector/nvd-index
- agent/author
- agent/type
- agent/first-publish-date
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-f7wm-x4gw-6m23
- alias/CVE-2020-25768
- agent/software-canonical-lookup
- agent/references
- agent/last-modified-date
- agent/severity
- agent/weakness
- agent/softwarecombine
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- agent/tags
- collector/github-advisory
- package-manager/composer
- vendor/contao
- canonical/contao contao
- version/contao contao/4.0
- version/contao contao/4.9.0
- version/contao contao/4.10.0