CVE-2016-9014 Django DNS Rebinding Vulnerability

High 8.1 Published Updated

Attackers can bypass Host header validation in Django when debug mode is enabled, facilitating DNS rebinding attacks.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2016-9014?

CVE-2016-9014 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 9 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Django before 1.8.x before 1.8.16, 1.9.x before 1.9.11, and 1.10.x before 1.10.3, when settings.DEBUG is True, allow remote attackers to conduct DNS rebinding attacks by leveraging failure to validate the HTTP Host header against settings.ALLOWED_HOSTS.

Weakness: CWE-264

Which versions are affected by CVE-2016-9014?

7 open source packages ship an affected version, including django and Django. It affects 3 products.

PackageAffectedFixed in
django PyPIAll versions1.8.16, 1.9.11, 1.10.3
django PyPIFrom 1.10a11.10.3
django PyPIFrom 1.8a11.8.16
django PyPIFrom 1.9a11.9.11
Django PyPIFrom 1.10a11.10.3
Django PyPIFrom 1.8a11.8.16
1 more packages
Django PyPIFrom 1.9a11.9.11

Products include Canonical Ubuntu Linux, Djangoproject Django, Fedoraproject Fedora.

How do I fix CVE-2016-9014?

Upgrade django to a fixed version for your release line: 1.8.16, 1.9.11 or 1.10.3.

Is CVE-2016-9014 being exploited?

There is no known exploitation of CVE-2016-9014 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2016-9014, DEBIAN-CVE-2016-9014, DLA-706-1, GHSA-3f2c-jm6v-cr35, PYSEC-2016-18, UBUNTU-CVE-2016-9014.

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