CVE-2023-22792CWE-400

A regular expression based DoS vulnerability in Action Dispatch <6.0.6.1,< 6.1.7.1, and <7.0.4.1

High · published February 9, 2023

CVSS v3.1
7.5
EPSS
2%
Percentile
77.0
In the wild
Unconfirmed
What it is

A regular expression based DoS vulnerability in Action Dispatch <6.0.6.1,< 6.1.7.1, and <7.0.4.1. Specially crafted cookies, in combination with a specially crafted X_FORWARDED_HOST header can cause the regular expression engine to enter a state of catastrophic backtracking. 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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01695 · 77.0th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2023-02-09T00:00Z
EPSS history
Timeline
  • 09 FEB 00:00Z
    A regular expression based DoS vulnerability in Action Dispatch <6.0.6.1,< 6.1.7.1, and <7.0.4.1
    cvelistv5