CVE-2023-22795

A regular expression based DoS vulnerability in Action Dispatch <6.1.7.1 and <7.0.4.1 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.

Link	Resource
https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118	Patch Vendor Advisory

Configuration 1

cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:* cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:* cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*

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Published : 2023-02-09 08:15

Updated : 2023-02-17 07:18

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NVD link : CVE-2023-22795

Mitre link : CVE-2023-22795

Rails

Rubyonrails

CWE-1333

Inefficient Regular Expression Complexity