CVE-2019-18887

NameCVE-2019-18887
DescriptionAn issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. The UriSigner was subject to timing attacks. This is related to symfony/http-kernel.
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)
ReferencesDLA-1999-1, DSA-4573-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
symfony (PTS)jessie2.3.21+dfsg-4+deb8u3vulnerable
jessie (security)2.3.21+dfsg-4+deb8u6fixed
stretch2.8.7+dfsg-1.3+deb9u2vulnerable
stretch (security)2.8.7+dfsg-1.3+deb9u3fixed
buster3.4.22+dfsg-2vulnerable
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)4.3.8+dfsg-1
symfonysourcebuster3.4.22+dfsg-2+deb10u1DSA-4573-1
symfonysourcejessie2.3.21+dfsg-4+deb8u6DLA-1999-1
symfonysourcestretch2.8.7+dfsg-1.3+deb9u3DSA-4573-1

Notes

https://symfony.com/blog/cve-2019-18887-use-constant-time-comparison-in-urisigner
https://github.com/symfony/symfony/commit/cccefe6a7f12e776df0665aeb77fe9294c285fbb

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