Search criteria
2 vulnerabilities by Flask-Middleware
CVE-2021-32618 (GCVE-0-2021-32618)
Vulnerability from cvelistv5 – Published: 2021-05-17 18:05 – Updated: 2024-08-03 23:25
VLAI?
Title
Open Redirect Vulnerability
Summary
The Python "Flask-Security-Too" package is used for adding security features to your Flask application. It is an is an independently maintained version of Flask-Security based on the 3.0.0 version of Flask-Security. All versions of Flask-Security-Too allow redirects after many successful views (e.g. /login) by honoring the ?next query param. There is code in FS to validate that the url specified in the next parameter is either relative OR has the same netloc (network location) as the requesting URL. This check utilizes Pythons urlsplit library. However many browsers are very lenient on the kind of URL they accept and 'fill in the blanks' when presented with a possibly incomplete URL. As a concrete example - setting http://login?next=\\\github.com will pass FS's relative URL check however many browsers will gladly convert this to http://github.com. Thus an attacker could send such a link to an unwitting user, using a legitimate site and have it redirect to whatever site they want. This is considered a low severity due to the fact that if Werkzeug is used (which is very common with Flask applications) as the WSGI layer, it by default ALWAYS ensures that the Location header is absolute - thus making this attack vector mute. It is possible for application writers to modify this default behavior by setting the 'autocorrect_location_header=False`.
Severity ?
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Flask-Middleware | flask-security |
Affected:
<= 4.0.1
|
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CVE-2021-21241 (GCVE-0-2021-21241)
Vulnerability from cvelistv5 – Published: 2021-01-11 20:35 – Updated: 2024-08-03 18:09
VLAI?
Title
CSRF can expose users authentication token in Flask-Security-Too
Summary
The Python "Flask-Security-Too" package is used for adding security features to your Flask application. It is an is a independently maintained version of Flask-Security based on the 3.0.0 version of Flask-Security. In Flask-Security-Too from version 3.3.0 and before version 3.4.5, 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. Version 3.4.5 and version 4.0.0 are patched. As a workaround, if you aren't using authentication tokens - you can set the SECURITY_TOKEN_MAX_AGE to "0" (seconds) which should make the token unusable.
Severity ?
7.4 (High)
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Flask-Middleware | flask-security-too |
Affected:
>= 3.3.0, < 3.4.5
|
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