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)jessie2.3.21+dfsg-4+deb8u3fixed
jessie (security)2.3.21+dfsg-4+deb8u6fixed
stretch2.8.7+dfsg-1.3+deb9u2fixed
stretch (security)2.8.7+dfsg-1.3+deb9u3fixed
buster3.4.22+dfsg-2fixed
buster (security)3.4.22+dfsg-2+deb10u1fixed
bullseye, sid4.3.8+dfsg-1fixed

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

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

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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