CVE-2018-14774

Description

An issue was discovered in HttpKernel 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. When using HttpCache, the values of the X-Forwarded-Host headers are implicitly set as trusted while this should be forbidden, leading to potential host header injection.

Category

7.2
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.15%
Third-Party Advisory github.com Third-Party Advisory symfony.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/symfony/symfony/commit/725dee4cd8b4ccd52e335ae4b4522242cea9bd4a patch third party advisory issue tracking
https://symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcache third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2018-14774?
CVE-2018-14774 has been scored as a high severity vulnerability.
How to fix CVE-2018-14774?
To fix CVE-2018-14774, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-14774 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-14774 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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