CVE-2024-27280 Information

Description

A buffer-overread issue was discovered in StringIO 3.0.1 as distributed in Ruby 3.0.x through 3.0.6 and 3.1.x through 3.1.4. The ungetbyte and ungetc methods on a StringIO can read past the end of a string and a subsequent call to StringIO.gets may return the memory value. 3.0.3 is the main fixed version; however for Ruby 3.0 users a fixed version is stringio 3.0.1.1 and for Ruby 3.1 users a fixed version is stringio 3.0.1.2.

Reference

https://hackerone.com/reports/1399856 https://www.ruby-lang.org/en/news/2024/03/21/buffer-overread-cve-2024-27280/