QID 983186

QID 983186: Python (pip) Security Update for django-two-factor-auth (GHSA-vhr6-pvjm-9qwf)

Security update has been released for django-two-factor-auth to fix the vulnerability.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

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).

  • CVSS V3 rated as Medium - 5.4 severity.
  • CVSS V2 rated as Medium - 3.6 severity.
  • Solution
    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.Workaround:
    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.
    Vendor References

    CVEs related to QID 983186

    Software Advisories
    Advisory ID Software Component Link
    GHSA-vhr6-pvjm-9qwf django-two-factor-auth URL Logo github.com/advisories/GHSA-vhr6-pvjm-9qwf

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