CVE-2019-3498 Improper Input Validation in Django

What is CVE-2019-3498?

CVE-2019-3498 is a medium-severity cross-site scripting vulnerability in Canonical Ubuntu Linux, published on 9 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In Django 1.11.x before 1.11.18, 2.0.x before 2.0.10, and 2.1.x before 2.1.5, an Improper Neutralization of Special Elements in Output Used by a Downstream Component issue exists in django.views.defaults.page_not_found(), leading to content spoofing (in a 404 error page) if a user fails to recognize that a crafted URL has malicious content.

Weakness: CWE-74

Which versions are affected by CVE-2019-3498?

7 open source packages ship an affected version, including django and Django. It affects 4 products.

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

How do I fix CVE-2019-3498?

Upgrade django to a fixed version for your release line: 1.11.18, 2.0.10 or 2.1.5.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-3498 being exploited?

There is no known exploitation of CVE-2019-3498 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2019-3498, DEBIAN-CVE-2019-3498, DLA-1629-1, DSA-4363-1, GHSA-337x-4q8g-prc5, MGASA-2019-0035 and 5 more.