Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sensiolabs | Symfony | <= 2.7.48 |
| Debian | Debian Linux | 8.0 |
| Drupal | Drupal | >= 8.0.0, < 8.5.6 |
References
- http://www.securityfocus.com/bid/104943Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041405Third Party AdvisoryVDB Entry
- https://github.com/symfony/symfony/commit/e447e8b92148ddb3d1956b96638600ec95e08fIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00009.htmlMailing ListThird Party Advisory
- https://seclists.org/bugtraq/2019/May/21Issue TrackingMailing ListThird Party Advisory
- https://symfony.com/blog/cve-2018-14773-remove-support-for-legacy-and-risky-httpPatchVendor Advisory
- https://www.debian.org/security/2019/dsa-4441Third Party Advisory
- https://www.drupal.org/SA-CORE-2018-005PatchThird Party Advisory
- http://www.securityfocus.com/bid/104943Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041405Third Party AdvisoryVDB Entry
- https://github.com/symfony/symfony/commit/e447e8b92148ddb3d1956b96638600ec95e08fIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00009.htmlMailing ListThird Party Advisory
- https://seclists.org/bugtraq/2019/May/21Issue TrackingMailing ListThird Party Advisory
- https://symfony.com/blog/cve-2018-14773-remove-support-for-legacy-and-risky-httpPatchVendor Advisory
- https://www.debian.org/security/2019/dsa-4441Third Party Advisory
FAQ
What is CVE-2018-14773?
CVE-2018-14773 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 f...
How severe is CVE-2018-14773?
CVE-2018-14773 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-14773?
Check the references section above for vendor advisories and patch information. Affected products include: Sensiolabs Symfony, Debian Debian Linux, Drupal Drupal.