PT-2018-12713 · Symfony · Symfony

Chaosversum · Published 2018-08-03 · Updated 2022-05-14 · CVE-2018-14774

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Symfony versions 2.7.0 through 2.7.48 Symfony versions 2.8.0 through 2.8.43 Symfony versions 3.3.0 through 3.3.17 Symfony versions 3.4.0 through 3.4.13 Symfony versions 4.0.0 through 4.0.13 Symfony versions 4.1.0 through 4.1.2

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

Recommendations For Symfony versions 2.7.0 through 2.7.48, update to a version outside of this range to resolve the issue. For Symfony versions 2.8.0 through 2.8.43, update to a version outside of this range to resolve the issue. For Symfony versions 3.3.0 through 3.3.17, update to a version outside of this range to resolve the issue. For Symfony versions 3.4.0 through 3.4.13, update to a version outside of this range to resolve the issue. For Symfony versions 4.0.0 through 4.0.13, update to a version outside of this range to resolve the issue. For Symfony versions 4.1.0 through 4.1.2, update to a version outside of this range to resolve the issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-01431

CVE-2018-14774

GHSA-66P6-7P29-55P9

Affected Products

Symfony

References · 19

• https://github.com/symfony/symfony/commit/725dee4cd8b4ccd52e335ae4b4522242cea9bd4a · Patch
• https://cve.org/CVERecord?id=CVE-2018-14774 · Security Note
• https://ubuntu.com/security/CVE-2018-14774 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-14774 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20251225SE16 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-14774 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14774 · Security Note
• https://osv.dev/vulnerability/GHSA-66p6-7p29-55p9 · Vendor Advisory
• https://symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcache · Patch
• https://osv.dev/vulnerability/CVE-2018-14774 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01431 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2018-14774 · Vendor Advisory
• https://github.com/symfony/symfony · Note
• https://github.com/symfony/symfony/commit/9cfcaba0bf71f87683510b5f47ebaac5f5d6a5ba · Note
• https://github.com/symfony/symfony/commit/974240e178bb01d734bf1df1ad5c3beba6a2f982 · Note