GHSA-vhr6-pvjm-9qwf

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Source
https://github.com/advisories/GHSA-vhr6-pvjm-9qwf
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/07/GHSA-vhr6-pvjm-9qwf/GHSA-vhr6-pvjm-9qwf.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-vhr6-pvjm-9qwf
Aliases
Published
2020-07-10T20:55:00Z
Modified
2024-09-16T21:45:55.894005Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N CVSS Calculator
  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
User passwords are stored in clear text in the Django session
Details

Impact

django-two-factor-auth versions 1.11 and before store the user's password in clear text in the user session (base64-encoded). The password is stored in the session when the user submits their username and password, and is removed once they complete authentication by entering a two-factor authentication code. This means that the password is stored in clear text in the session for an arbitrary amount of time, and potentially forever if the user begins the login process by entering their username and password, and then leaves before entering their two-factor authentication code.

The severity of this issue depends on which type of session storage you have configured: in the worst case, if you're using Django's default database session storage, then users' password are stored in clear text in your database. In the best case, if you're using Django's signed cookie session, then users' passwords are only stored in clear text within their browser's cookie store. In the common case of using Django's cache session store, the users' password are stored in clear text in whatever cache storage you have configured (typically Memcached or Redis).

Patches

Upgrade to version 1.12 to resolve this issue.

After upgrading, users should be sure to delete any clear text passwords that have been stored. For example, if you're using the database session backend, you'll likely want to delete any session record from the database and purge that data from any database backups or replicas.

In addition, affected organizations who have suffered a database breach while using an affected version should inform their users that their clear text passwords have been compromised. All organizations should encourage users whose passwords were insecurely stored to change these passwords on any sites where they were used.

Workarounds

Switching Django's session storage to use signed cookies instead of the database or cache lessens the impact of this issue, but should not be done without a thorough understanding of the security tradeoffs of using signed cookies rather than a server-side session storage. There is no way to fully mitigate the issue without upgrading.

References

For an explanation of why storing cleartext password is a substantial vulnerability: Hashing Passwords: One-Way Road to Security.
For documentation on configuring the Django session storage engine: Django session documentation.

For more information

If you have any questions or comments about this advisory: * Open an issue in the repo

References

Affected packages

PyPI / django-two-factor-auth

Package

Name
django-two-factor-auth
View open source insights on deps.dev
Purl
pkg:pypi/django-two-factor-auth

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.12

Affected versions

0.*

0.1.0
0.1.1
0.1.2
0.2.0
0.2.1
0.2.2
0.2.3
0.3.0
0.3.1
0.4.0
0.5.0

1.*

1.0.0-beta1
1.0.0-beta2
1.0.0-beta3
1.0.0
1.1.0
1.1.1
1.2.0
1.2.1
1.2.2
1.3.0
1.3.1
1.4.0
1.5.0
1.6.0
1.6.1
1.6.2
1.7.0
1.8.0
1.9.1
1.10.0
1.11.0