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CVE-2021-31542: Path Traversal in Django

June 4, 2021 (updated September 20, 2024)

In Django 2.2 before 2.2.21, 3.1 before 3.1.9, and 3.2 before 3.2.1, MultiPartParser, UploadedFile, and FieldFile allowed directory traversal via uploaded files with suitably crafted file names.

References

  • docs.djangoproject.com/en/3.2/releases/security
  • github.com/advisories/GHSA-rxjp-mfm9-w4wr
  • github.com/django/django
  • github.com/django/django/commit/04ac1624bdc2fa737188401757cf95ced122d26d
  • github.com/django/django/commit/25d84d64122c15050a0ee739e859f22ddab5ac48
  • github.com/django/django/commit/c98f446c188596d4ba6de71d1b77b4a6c5c2a007
  • github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2021-7.yaml
  • groups.google.com/forum/
  • groups.google.com/forum/
  • lists.debian.org/debian-lts-announce/2021/05/msg00005.html
  • lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV
  • lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVKYPHR3TKR2ESWXBPOJEKRO2OSJRZUE
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZVKYPHR3TKR2ESWXBPOJEKRO2OSJRZUE
  • nvd.nist.gov/vuln/detail/CVE-2021-31542
  • security.netapp.com/advisory/ntap-20210618-0001
  • www.djangoproject.com/weblog/2021/may/04/security-releases

Code Behaviors & Features

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Affected versions

All versions starting from 2.2 before 2.2.21, all versions starting from 3.0 before 3.1.9, all versions starting from 3.2 before 3.2.1

Fixed versions

  • 2.2.21
  • 3.1.9
  • 3.2.1

Solution

Upgrade to versions 2.2.21, 3.1.9, 3.2.1 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-434: Unrestricted Upload of File with Dangerous Type

Source file

pypi/Django/CVE-2021-31542.yml

Spotted a mistake? Edit the file on GitLab.

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