CVE-2018-14773
Description
An issue was discovered in Http Foundation in Symfony 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0 through 4.0.13, and 4.1.0 through 4.1.2. It arises from support for a (legacy) IIS header that lets users override the path in the request URL via the X-Original-URL or X-Rewrite-URL HTTP request header. These headers are designed for IIS support, but it's not verified that the server is in fact running IIS, which means anybody who can send these requests to an application can trigger this. This affects \Symfony\Component\HttpFoundation\Request::prepareRequestUri() where X-Original-URL and X_REWRITE_URL are both used. The fix drops support for these methods so that they cannot be used as attack vectors such as web cache poisoning.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-14773
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 8.5.6-1 | |
| debian | bookworm | fixed | 3.4.14+dfsg-1 |
| debian | bullseye | fixed | 3.4.14+dfsg-1 |
| debian | forky | fixed | 3.4.14+dfsg-1 |
| debian | sid | fixed | 3.4.14+dfsg-1 |
| debian | trixie | fixed | 3.4.14+dfsg-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/http-foundation | >=2.7.0,<2.7.49 | 2.7.49 |
| Packagist | symfony/http-foundation | >=2.8.0,<2.8.44 | 2.8.44 |
| Packagist | symfony/http-foundation | >=3.0.0,<3.3.18 | 3.3.18 |
| Packagist | symfony/http-foundation | >=3.4.0,<3.4.14 | 3.4.14 |
| Packagist | symfony/http-foundation | >=4.0.0,<4.0.14 | 4.0.14 |
| Packagist | symfony/http-foundation | >=4.1.0,<4.1.3 | 4.1.3 |
| Packagist | symfony/symfony | >=2.7.0,<2.7.49 | 2.7.49 |
| Packagist | symfony/symfony | >=2.8.0,<2.8.44 | 2.8.44 |
| Packagist | symfony/symfony | >=3.0.0,<3.3.18 | 3.3.18 |
| Packagist | symfony/symfony | >=3.4.0,<3.4.14 | 3.4.14 |
| Packagist | symfony/symfony | >=4.0.0,<4.0.14 | 4.0.14 |
| Packagist | symfony/symfony | >=4.1.0,<4.1.3 | 4.1.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-14773
- https://github.com/symfony/symfony/commit/e447e8b92148ddb3d1956b96638600ec95e08f6b
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2018-14773.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-14773.yaml
- https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html
- https://seclists.org/bugtraq/2019/May/21
- https://symfony.com/blog/cve-2018-14773-remove-support-for-legacy-and-risky-http-headers
- https://www.debian.org/security/2019/dsa-4441
- https://www.drupal.org/SA-CORE-2018-005
- http://www.securityfocus.com/bid/104943
- http://www.securitytracker.com/id/1041405
- https://security-tracker.debian.org/tracker/CVE-2018-14773
Verify integrity in audit chain (admin only). AS-IS.