CVE-2018-11386

NameCVE-2018-11386
DescriptionAn issue was discovered in the HttpFoundation component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. The PDOSessionHandler class allows storing sessions on a PDO connection. Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much resources.
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)
ReferencesDSA-4262-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
symfony (PTS)stretch (security), stretch2.8.7+dfsg-1.3+deb9u3fixed
buster, buster (security)3.4.22+dfsg-2+deb10u1fixed
bullseye, sid4.4.19+dfsg-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
symfonysourcejessie(not affected)
symfonysourcestretch2.8.7+dfsg-1.3+deb9u1DSA-4262-1
symfonysource(unstable)3.4.12+dfsg-1

Notes

[jessie] - symfony <not-affected> (vulnerable code no present, no rollback mechanism in this version)
https://symfony.com/blog/cve-2018-11386-denial-of-service-when-using-pdosessionhandler

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