CVE-2018-11407

Name	CVE-2018-11407
Description	An 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.
Source	CVE (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 Package	Release	Version	Status
symfony (PTS)	bullseye	4.4.19+dfsg-2+deb11u6	fixed
	bookworm, bookworm (security)	5.4.23+dfsg-1+deb12u4	fixed
	sid, trixie	6.4.17+dfsg-6	fixed

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

Package	Type	Release	Fixed Version
symfony	source	jessie	(not affected)
symfony	source	stretch	(not affected)
symfony	source	(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