Denial of Service Vulnerability in Action Dispatch by Ruby on Rails
CVE-2023-22795

7.5HIGH

Key Information:

Vendor

Rubyonrails

Status
https://github.com/rails/rails
Vendor
CVE Published:
9 February 2023

What is CVE-2023-22795?

A vulnerability exists in Action Dispatch related to the If-None-Match HTTP header in versions below 6.1.7.1 and 7.0.4.1. Exploitation can occur when a specially crafted header causes the regular expression engine to enter a state of catastrophic backtracking. This can result in excessive CPU and memory consumption on systems running Ruby versions prior to 3.2.0, potentially leading to service disruptions. Users are strongly advised to upgrade to the patched versions or implement available workarounds to mitigate risk.

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Deploy the Patch

Affected Version(s)

https://github.com/rails/rails 6.1.7.1, 7.0.4.1

References

https://discuss.rubyonrails.org/t/cve-2023-22795-possible...
https://www.debian.org/security/2023/dsa-5372
vendor-advisory
https://security.netapp.com/advisory/ntap-20240202-0010/

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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