Upstream information
Description
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`.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 5.8 |
| Vector | AV:N/AC:M/Au:N/C:P/I:P/A:N |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | None |
| National Vulnerability Database | SUSE | |
|---|---|---|
| Base Score | 6.1 | 5.4 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | Required | Required |
| Scope | Changed | Unchanged |
| Confidentiality Impact | Low | Low |
| Integrity Impact | Low | Low |
| Availability Impact | None | None |
| CVSSv3 Version | 3.1 | 3.1 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP5 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server 15 SP5 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server 15 SP6 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-Flask-Security-Too | Affected |
| SUSE Manager Proxy 4.3 | python-Flask-Security-Too | Released |
| SUSE Manager Retail Branch Server 4.3 | python-Flask-Security-Too | Released |
| SUSE Manager Server 4.3 | python-Flask-Security-Too | Released |
| openSUSE Leap 15.5 | python-Flask-Security | Affected |
| openSUSE Leap 15.5 | python-Flask-Security-Too | Affected |
| openSUSE Leap 15.6 | python-Flask-Security | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP4 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | python-Flask-Security-Too | Unsupported |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | python-Flask-Security-Too | Unsupported |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Server 15 SP2 | python-Flask-Security-Too | Unsupported |
| SUSE Linux Enterprise Server 15 SP2-LTSS | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Server 15 SP3 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Server 15 SP3-LTSS | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server 15 SP4 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server Business Critical Linux 15 SP1 | python-Flask-Security | Released |
| SUSE Linux Enterprise Server Business Critical Linux 15 SP2 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | python-Flask-Security-Too | Unsupported |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-Flask-Security-Too | Released |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | python-Flask-Security | Released |
| SUSE CaaS Platform 4.5 | python-Flask-Security-Too | Unsupported |
| SUSE Enterprise Storage 6 | python-Flask-Security | Released |
| SUSE Enterprise Storage 7 | python-Flask-Security-Too | Released |
| SUSE Enterprise Storage 7.1 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise Desktop 15 SP1 | python-Flask-Security | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | python-Flask-Security-Too | Unsupported |
| SUSE Linux Enterprise Desktop 15 SP3 | python-Flask-Security-Too | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | python-Flask-Security | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | python-Flask-Security | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | python-Flask-Security | Released |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | python-Flask-Security | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | python-Flask-Security-Too | Unsupported |
| SUSE Linux Enterprise Real Time 15 SP3 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server 15 SP1 | python-Flask-Security | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | python-Flask-Security | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | python-Flask-Security | Released |
| SUSE Linux Enterprise Server 15 SP2-BCL | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | python-Flask-Security-Too | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | python-Flask-Security | Released |
| SUSE Manager Proxy 4.0 | python-Flask-Security | Affected |
| SUSE Manager Proxy 4.1 | python-Flask-Security-Too | Unsupported |
| SUSE Manager Proxy 4.2 | python-Flask-Security-Too | Released |
| SUSE Manager Retail Branch Server 4.0 | python-Flask-Security | Affected |
| SUSE Manager Retail Branch Server 4.1 | python-Flask-Security-Too | Unsupported |
| SUSE Manager Retail Branch Server 4.2 | python-Flask-Security-Too | Released |
| SUSE Manager Server 4.0 | python-Flask-Security | Affected |
| SUSE Manager Server 4.1 | python-Flask-Security-Too | Unsupported |
| SUSE Manager Server 4.2 | python-Flask-Security-Too | Released |
| openSUSE Leap 15.3 | python-Flask-Security | Affected |
| openSUSE Leap 15.3 | python-Flask-Security-Too | Affected |
| openSUSE Leap 15.4 | python-Flask-Security | Affected |
| openSUSE Leap 15.4 | python-Flask-Security-Too | Affected |
SUSE Timeline for this CVE
CVE page created: Tue May 18 03:04:35 2021CVE page last modified: Fri Sep 13 13:14:14 2024