PYSEC-2022-193

    Dashboard / Vulnerabilities / PYSEC-2022-193

    PYSEC-2022-193

    Published: 25 Apr 2022Last Modified: 8 Nov 2023

    Summary:

    Details: flask-session-captcha is a package which allows users to extend Flask by adding an image based captcha stored in a server side session. In versions prior to 1.2.1, he `captcha.validate()` function would return `None` if passed no value (e.g. by submitting an having an empty form). If implementing users were checking the return value to be **False**, the captcha verification check could be bypassed. Version 1.2.1 fixes the issue. Users can workaround the issue by not explicitly checking that the value is False. Checking the return value less explicitly should still work.

    References: https://github.com/Tethik/flask-session-captcha/releases/tag/v1.2.1, https://github.com/Tethik/flask-session-captcha/pull/27, https://github.com/Tethik/flask-session-captcha/commit/2811ae23a38d33b620fb7a07de8837c6d65c13e4, https://github.com/Tethik/flask-session-captcha/security/advisories/GHSA-7r87-cj48-wj45

    Affected packages

    Package

    Name: flask-session-captcha

    Purl: pkg:pypi/flask-session-captcha

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -2811ae23a38d33b620fb7a07de8837c6d65c13e4

    Affected versions

    1.0.0
    1.0.1
    1.0.2
    1.0.3

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2022-193 | CVE-DB