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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.4.14+dfsg-1 |
| sid | Fixed | 3.4.14+dfsg-1 |
| forky | Fixed | 3.4.14+dfsg-1 |
| bullseye | Fixed | 3.4.14+dfsg-1 |
| bookworm | Fixed | 3.4.14+dfsg-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| 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 | >=3.3.0,<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-2018-14774
- https://github.com/symfony/symfony/commit/725dee4cd8b4ccd52e335ae4b4522242cea9bd4a
- https://github.com/symfony/symfony/commit/7f912bbb78377c2ea331b3da28363435fbd91337
- https://github.com/symfony/symfony/commit/96504fb8c9f91204727d2930eb837473ce154956
- https://github.com/symfony/symfony/commit/974240e178bb01d734bf1df1ad5c3beba6a2f982
- https://github.com/symfony/symfony/commit/9cfcaba0bf71f87683510b5f47ebaac5f5d6a5ba
- https://github.com/symfony/symfony/commit/bcf5897bb1a99d4acae8bf7b73e81bfdeaac0922
- https://github.com/symfony/symfony
- https://symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcache
- https://security-tracker.debian.org/tracker/CVE-2018-14774
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.