CVE-2016-2403

NameCVE-2016-2403
DescriptionSymfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind.
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)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)
symfonysourcestretch2.8.7+dfsg-1.3+deb9u1DSA-4262-1
symfonysource(unstable)2.8.6+dfsg-1

Notes

[jessie] - symfony <not-affected> (Vulnerable code not present)
http://symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password
Original commit incomplete and did not test for 'null' password resulting in
CVE-2018-11407. Complete fix as per
https://github.com/symfony/symfony/pull/26589
https://github.com/symfony/symfony/commit/2f5bd18d82f4a8911d549d14c72bf935602834a9

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