Vulnerability Details : CVE-2018-14773
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.
Products affected by CVE-2018-14773
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-14773
5.01%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 89 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-14773
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:P/A:N |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST |
References for CVE-2018-14773
-
https://seclists.org/bugtraq/2019/May/21
Bugtraq: [SECURITY] [DSA 4441-1] symfony security updateIssue Tracking;Mailing List;Third Party Advisory
-
http://www.securitytracker.com/id/1041405
Drupal Access Control Flaw in Symfony HttpFoundation Component Lets Remote Users Bypass Security Restrictions on the Target System - SecurityTrackerThird Party Advisory;VDB Entry
-
https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html
[SECURITY] [DLA 1707-1] symfony security updateMailing List;Third Party Advisory
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https://www.drupal.org/SA-CORE-2018-005
Drupal Core - 3rd-party libraries -SA-CORE-2018-005 | Drupal.orgPatch;Third Party Advisory
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http://www.securityfocus.com/bid/104943
Symfony CVE-2018-14773 Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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https://symfony.com/blog/cve-2018-14773-remove-support-for-legacy-and-risky-http-headers
CVE-2018-14773: Remove support for legacy and risky HTTP headers (Symfony Blog)Patch;Vendor Advisory
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https://github.com/symfony/symfony/commit/e447e8b92148ddb3d1956b96638600ec95e08f6b
[HttpFoundation] Remove support for legacy and risky HTTP headers · symfony/symfony@e447e8b · GitHubIssue Tracking;Patch;Third Party Advisory
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https://www.debian.org/security/2019/dsa-4441
Debian -- Security Information -- DSA-4441-1 symfonyThird Party Advisory
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