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VULNERABILITIES

CVE-2023-22795 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118 CVEPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20240202-0010/ CVE
https://www.debian.org/security/2023/dsa-5372 CVEThird Party Advisory
https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118 [email protected]PatchVendor Advisory
https://security.netapp.com/advisory/ntap-20240202-0010/ [email protected]

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1333Inefficient Regular Expression Complexity[email protected]
CWE-400Uncontrolled Resource Consumption[email protected]

Affected Products

ProductVersions
rubyonrails rails
< 6.1.7.1
>= 7.0.0, < 7.0.4.1

CPE

  • cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
ruby-lang ruby
< 3.2.0

CPE

  • cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
debian debian linux
11.0

CPE

  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2023-22795
NVD Published Date:
Feb 9, 2023
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2023-22795 Details - Not Deferred