CVE-2018-11407

NameCVE-2018-11407
DescriptionAn issue was discovered in the Ldap component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a "null" password and valid username, which triggers an unauthenticated bind. NOTE: this issue exists because of an incomplete fix for CVE-2016-2403.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
symfony (PTS)jessie, jessie (lts)2.3.21+dfsg-4+deb8u6fixed
stretch (security)2.8.7+dfsg-1.3+deb9u3fixed
stretch (lts), stretch2.8.7+dfsg-1.3+deb9u5fixed
buster3.4.22+dfsg-2+deb10u1fixed
buster (security)3.4.22+dfsg-2+deb10u3fixed
bullseye4.4.19+dfsg-2+deb11u4fixed
bookworm5.4.23+dfsg-1+deb12u1fixed
sid, trixie6.4.5+dfsg-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
symfonysourcejessie(not affected)
symfonysourcestretch(not affected)
symfonysource(unstable)3.4.12+dfsg-1

Notes

[stretch] - symfony <not-affected> (Incomplete fix for CVE-2016-2403 not applied)
[jessie] - symfony <not-affected> (Incomplete fix for CVE-2016-2403 not applied)
https://symfony.com/blog/cve-2018-11407-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password

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