cve/2021/CVE-2021-26296.md

CVE-2021-26296

Description

In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.

POC

Reference

• http://packetstormsecurity.com/files/161484/Apache-MyFaces-2.x-Cross-Site-Request-Forgery.html
• http://seclists.org/fulldisclosure/2021/Feb/66

Github

• https://github.com/IBM/websphere-automation-lab
• https://github.com/arkarkala/ThinkLab-2257