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Ruby on Rails Inefficient Regular Expression Complexity Vulnerability - CVE-2023-22795 - Vulnerability Database
Ruby on Rails

Ruby on Rails Inefficient Regular Expression Complexity Vulnerability - CVE-2023-22795

High
Reference: CVE-2023-22795
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2023-22795
Title: Ruby on Rails Inefficient Regular Expression Complexity Vulnerability
Overview:

A regular expression based DoS vulnerability in Action Dispatch lt6.1.7.1 and lt7.0.4.1 related to the If-None-Match header. A specially crafted HTTP If-None-Match header can cause the regular expression engine to enter a state of catastrophic backtracking when on a version of Ruby below 3.2.0. This can cause the process to use large amounts of CPU and memory leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.