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AUSCERT External Security Bulletin Redistribution
ESB-2018.0346
Django -- information leakage
5 February 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: python-django
Publisher: FreeBSD
Operating System: FreeBSD
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-6188
Original Bulletin:
http://www.vuxml.org/freebsd/d696473f-9f32-42c5-a106-bf4536fb1f74.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than FreeBSD. It is recommended that administrators
running python-django check for an updated version of the software
for their operating system.
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Django -- information leakage
Affected packages
py27-django111 < 1.11.10
py34-django111 < 1.11.10
py35-django111 < 1.11.10
py36-django111 < 1.11.10
py27-django20 < 2.0.2
py34-django20 < 2.0.2
py35-django20 < 2.0.2
py36-django20 < 2.0.2
Details
VuXML ID d696473f-9f32-42c5-a106-bf4536fb1f74
Discovery 2018-02-01
Entry 2018-02-02
Django release notes:
CVE-2018-6188: Information leakage in AuthenticationForm
A regression in Django 1.11.8 made AuthenticationForm run its
confirm_login_allowed() method even if an incorrect password is entered.
This can leak information about a user, depending on what messages
confirm_login_allowed() raises. If confirm_login_allowed() isn't
overridden, an attacker enter an arbitrary username and see if that user
has been set to is_active=False. If confirm_login_allowed() is overridden,
more sensitive details could be leaked.
This issue is fixed with the caveat that AuthenticationForm can no longer
raise the "This account is inactive." error if the authentication backend
rejects inactive users (the default authentication backend, ModelBackend,
has done that since Django 1.10). This issue will be revisited for Django
2.1 as a fix to address the caveat will likely be too invasive for
inclusion in older versions.
References
CVE Name CVE-2018-6188
URL https://docs.djangoproject.com/en/1.11/releases/1.11.10/
URL https://docs.djangoproject.com/en/2.0/releases/2.0.2/
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