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presidentbeef / brakeman

A static analysis security vulnerability scanner for Ruby on Rails applications
https://brakemanscanner.org/
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Fix recursion in masgn #1878

Closed presidentbeef closed 4 weeks ago

presidentbeef commented 1 month ago

Fixes #1877

dryrunsecurity[bot] commented 1 month ago

DryRun Security Summary

The provided code changes do not appear to introduce any critical security vulnerabilities, with the first change introducing a new method that could potentially lead to a stack overflow error and a denial of service (DoS) condition, and the second change being a bug fix in the Brakeman static code analysis tool to improve the handling of multiple assignment expressions.

Expand for full summary
**Summary:** The code changes provided in this pull request do not appear to introduce any critical security vulnerabilities. The first change introduces a new method called `test_masgn_recursion` in the `masgn.rb` file, which creates a recursive lambda function assignment. While this could potentially lead to a stack overflow error and a denial of service (DoS) condition, the code itself is relatively simple and does not involve any external input or sensitive operations. The second change is a bug fix in the `Brakeman::AliasProcessor` class, which is responsible for processing method calls and assignments in Ruby code. The fix addresses an issue related to the handling of multiple assignment expressions, improving the reliability and robustness of the Brakeman static code analysis tool. This change does not directly address any specific security vulnerabilities, but it is part of the ongoing maintenance and improvement of the Brakeman tool, which is used to detect security issues in Ruby on Rails applications. **Files Changed:** 1. `test/apps/rails8/lib/masgn.rb`: This file has been modified to introduce a new method called `test_masgn_recursion`, which creates a recursive lambda function assignment. While this could potentially lead to a stack overflow error and a denial of service (DoS) condition, the code itself does not introduce any obvious security vulnerabilities. 2. `lib/brakeman/processors/alias_processor.rb`: This file has been updated to fix an issue in the `Brakeman::AliasProcessor` class, which is responsible for processing method calls and assignments in Ruby code. The fix addresses the handling of multiple assignment expressions, improving the reliability and robustness of the Brakeman static code analysis tool.

Code Analysis

We ran 9 analyzers against 2 files and 0 analyzers had findings. 9 analyzers had no findings.

Riskiness

:green_circle: Risk threshold not exceeded.

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