Vulnerabilities > CVE-2021-39197 - Unspecified vulnerability in Better Errors Project Better Errors

CVSS 8.8 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

network

low complexity

better-errors-project

NVD

Published: 2021-09-07

Updated: 2024-11-21

Summary

better_errors is an open source replacement for the standard Rails error page with more information rich error pages. It is also usable outside of Rails in any Rack app as Rack middleware. better_errors prior to 2.8.0 did not implement CSRF protection for its internal requests. It also did not enforce the correct "Content-Type" header for these requests, which allowed a cross-origin "simple request" to be made without CORS protection. These together left an application with better_errors enabled open to cross-origin attacks. As a developer tool, better_errors documentation strongly recommends addition only to the `development` bundle group, so this vulnerability should only affect development environments. Please ensure that your project limits better_errors to the `development` group (or the non-Rails equivalent). Starting with release 2.8.x, CSRF protection is enforced. It is recommended that you upgrade to the latest release, or minimally to "~> 2.8.3". There are no known workarounds to mitigate the risk of using older releases of better_errors.

Vulnerable Configurations

Part	Description	Count
Application	Better_Errors_Project Better Errors Project Better Errors 0.0.1 Better Errors Project Better Errors 0.0.2 Better Errors Project Better Errors 0.0.3 Better Errors Project Better Errors 0.0.4 Better Errors Project Better Errors 0.0.5 Better Errors Project Better Errors 0.0.6 Better Errors Project Better Errors 0.0.7 Better Errors Project Better Errors 0.0.8 Better Errors Project Better Errors 0.1.0 Better Errors Project Better Errors 0.1.1 Better Errors Project Better Errors 0.2.0 Better Errors Project Better Errors 0.3.0 Better Errors Project Better Errors 0.3.2 Better Errors Project Better Errors 0.5.0 Better Errors Project Better Errors 0.6.0 Better Errors Project Better Errors 0.7.0 Better Errors Project Better Errors 0.7.2 Better Errors Project Better Errors 0.8.0 Better Errors Project Better Errors 0.9.0 Better Errors Project Better Errors 1.0.0 Better Errors Project Better Errors 1.0.1 Better Errors Project Better Errors 1.1.0 Better Errors Project Better Errors 2.0.0 Better Errors Project Better Errors 2.1.0 Better Errors Project Better Errors 2.1.1 Better Errors Project Better Errors 2.2.0 Better Errors Project Better Errors 2.3.0 Better Errors Project Better Errors 2.4.0 Better Errors Project Better Errors 2.5.0 Better Errors Project Better Errors 2.5.1 Better Errors Project Better Errors 2.6.0 Better Errors Project Better Errors 2.7.0 Better Errors Project Better Errors 2.7.1	34

Summary

Vulnerable Configurations

References