CVE-2018-14774

NameCVE-2018-14774
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
symfony (PTS)jessie2.3.21+dfsg-4+deb8u3fixed
jessie (security)2.3.21+dfsg-4+deb8u5fixed
stretch2.8.7+dfsg-1.3+deb9u1vulnerable
stretch (security)2.8.7+dfsg-1.3+deb9u2vulnerable
buster, sid3.4.22+dfsg-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
symfonysource(unstable)3.4.14+dfsg-1medium
symfonysourcejessie(not affected)

Notes

[stretch] - symfony <no-dsa> (Minor issue)
[jessie] - symfony <not-affected> (Vulnerable code not present, introduced later in commit 4c8a25a6e2)
https://symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcache

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