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CVE-2018-11407

Published: 13 June 2018

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.

From the Ubuntu Security Team

It was discovered that Symfony allowed unauthorized access on a misconfigured LDAP server. A remote attacker could use this vulnerability to gain unauthorized access.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
symfony
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(3.4.15+dfsg-2ubuntu4)
jammy Not vulnerable
(3.4.15+dfsg-2ubuntu4)
artful Ignored
(end of life)
bionic
Released (3.4.6+dfsg-1ubuntu0.1+esm1)
Available with Ubuntu Pro
cosmic Not vulnerable
(3.4.15+dfsg-2ubuntu4)
disco Not vulnerable
(3.4.15+dfsg-2ubuntu4)
eoan Not vulnerable
(3.4.15+dfsg-2ubuntu4)
focal Not vulnerable
(3.4.15+dfsg-2ubuntu4)
groovy Not vulnerable
(3.4.15+dfsg-2ubuntu4)
impish Not vulnerable
(3.4.15+dfsg-2ubuntu4)
kinetic Not vulnerable
(3.4.15+dfsg-2ubuntu4)
lunar Not vulnerable
(3.4.15+dfsg-2ubuntu4)
trusty Does not exist

upstream
Released (3.4.12+dfsg-1)
xenial Not vulnerable

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H