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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4262-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
symfony (PTS)bullseye4.4.19+dfsg-2+deb11u6fixed
bookworm5.4.23+dfsg-1+deb12u2fixed
bookworm (security)5.4.23+dfsg-1+deb12u4fixed
trixie6.4.15+dfsg-1fixed
sid6.4.16+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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