CVE-2022-24880

 

Published at: - 26-04-2022 12:15

Last modified: - 05-05-2022 08:20

Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• 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

 

Keywords

NVD

 

CVE-2022-24880

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures