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AUSCERT External Security Bulletin Redistribution
ESB-2021.1917
USN-4975-1: Django vulnerabilities
3 June 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Django
Publisher: Ubuntu
Operating System: Ubuntu
Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33571 CVE-2021-33203 CVE-2021-32052
Original Bulletin:
https://ubuntu.com/security/notices/USN-4975-1
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running Django check for an updated version of the software for
their operating system.
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USN-4975-1: Django vulnerabilities
02 June 2021
Several security issues were fixed in Django.
Releases
o Ubuntu 21.04
o Ubuntu 20.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o python-django - High-level Python web development framework
Details
It was discovered that the Django URLValidator function incorrectly handled
newlines and tabs. A remote attacker could possibly use this issue to
perform a header injection attack. This issue only affected Ubuntu 20.04
LTS, Ubuntu 20.10, and Ubuntu 21.04. ( CVE-2021-32052 )
Rasmus Lerchedahl Petersen and Rasmus Wriedt Larsen discovered that Django
incorrectly handled path sanitation in admindocs. A remote attacker could
possibly use this issue to determine the existence of arbitrary files and
in certain configurations obtain their contents. ( CVE-2021-33203 )
It was discovered that Django incorrectly handled IPv4 addresses with
leading zeros. A remote attacker could possibly use this issue to perform a
wide variety of attacks, including bypassing certain access restrictions.
( CVE-2021-33571 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.04
o python3-django - 2:2.2.20-1ubuntu0.2
Ubuntu 20.10
o python3-django - 2:2.2.16-1ubuntu0.5
Ubuntu 20.04
o python3-django - 2:2.2.12-1ubuntu0.7
Ubuntu 18.04
o python3-django - 1:1.11.11-1ubuntu1.14
o python-django - 1:1.11.11-1ubuntu1.14
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-32052
o CVE-2021-33571
o CVE-2021-33203
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