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CSRF Vuln can expose users authentication token

High
jwag956 published GHSA-hh7m-rx4f-4vpv Jan 8, 2021

Package

Flask-Security (pypi)

Affected versions

3.3.0 - 3.4.4

Patched versions

3.4.5

Description

Issue

The /login and /change endpoints can return the authenticated user's authentication token in response to a GET request. Since GET requests aren't protected with a CSRF token, this could lead to a malicious 3rd party site acquiring the authentication token.

Patches

Version 3.4.5 and soon to be released 4.0.0 are patched.

Workarounds

If you aren't using authentication tokens - you can set the SECURITY_TOKEN_MAX_AGE to "0" (seconds) which should make the token unusable.

References

None

Severity

High

CVE ID

CVE-2021-21241

Weaknesses

No CWEs