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[email protected]CVE-2021-21241

HistoryJan 11, 2021 - 9:15 p.m.

CVE-2021-21241

2021-01-1121:15:13

CWE-352

[email protected]

web.nvd.nist.gov

flask-security-too

python

security

authentication

csrf token

nvd

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

7.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

7.3 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

46.4%

JSON

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.

Affected configurations

Vulners

NVD

Node

flask-middlewareflask_security_tooRange3.3.0–3.4.5

CPENameOperatorVersion
flask-security-too_project:flask-security-tooflask-security-too project flask-security-toolt3.4.5

CPE	Name	Operator	Version
flask-security-too_project:flask-security-too	flask-security-too project flask-security-too	lt	3.4.5

CNA Affected

[
  {
    "product": "flask-security-too",
    "vendor": "Flask-Middleware",
    "versions": [
      {
        "status": "affected",
        "version": ">= 3.3.0, < 3.4.5"
      }
    ]
  }
]