[SECURITY] [DLA 2676-1] python-django security update

Debian LTS Advisory DLA-2676-1 [email protected]
https://www.debian.org/lts/security/ Chris Lamb
June 05, 2021 https://wiki.debian.org/LTS

Package : python-django
Version : 1:1.10.7-2+deb9u14
CVE IDs : CVE-2021-33203 CVE-2021-33571
Debian Bug : #989394

Two issues were discovered in Django, the Python-based web
development framework:

• CVE-2021-33203: Potential directory traversal via admindocs

  Staff members could use the admindocs TemplateDetailView view to
  check the existence of arbitrary files. Additionally, if (and only
  if) the default admindocs templates have been customized by the
  developers to also expose the file contents, then not only the
  existence but also the file contents would have been exposed.

  As a mitigation, path sanitation is now applied and only files
  within the template root directories can be loaded.

  This issue has low severity, according to the Django security
  policy.

  Thanks to Rasmus Lerchedahl Petersen and Rasmus Wriedt Larsen from
  the CodeQL Python team for the report.

• CVE-2021-33571: Possible indeterminate SSRF, RFI, and LFI attacks
  since validators accepted leading zeros in IPv4 addresses

  URLValidator, validate_ipv4_address(), and
  validate_ipv46_address() didn't prohibit leading zeros in octal
  literals. If you used such values you could suffer from
  indeterminate SSRF, RFI, and LFI attacks.

  validate_ipv4_address() and validate_ipv46_address() validators
  were not affected on Python 3.9.5+.

  This issue has medium severity, according to the Django security
  policy.

For Debian 9 "Stretch", this problem has been fixed in version
1:1.10.7-2+deb9u14.

We recommend that you upgrade your python-django packages.

For the detailed security status of python-django please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/python-django

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS