CVE-2023-22792 ReDoS based DoS vulnerability in Action Dispatch
Attackers can cause denial of service in Ruby on Rails applications by sending crafted cookies and headers that trigger catastrophic regex backtracking.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-22792?
CVE-2023-22792 is a high-severity denial of service vulnerability in Rubyonrails Rails, published on 9 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2023-22792?
6 open source packages ship an affected version, including actionpack. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
actionpack RubyGems | From 3.0.0 | 5.2.8.15 |
actionpack RubyGems | From 3.0.0 | 5.2.8.15 |
actionpack RubyGems | From 6.0.0 | 6.1.7.1 |
actionpack RubyGems | From 6.0.0 | 6.1.7.1 |
actionpack RubyGems | From 7.0.0 | 7.0.4.1 |
actionpack RubyGems | From 7.0.0 | 7.0.4.1 |
Products include Rubyonrails Rails.
How do I fix CVE-2023-22792?
Upgrade actionpack to a fixed version for your release line: 5.2.8.15, 6.1.7.1 or 7.0.4.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-22792 being exploited?
There is no known exploitation of CVE-2023-22792 in the wild and no public exploit code.
Other vulnerabilities in Rubyonrails Rails
- CVE-2013-0277 Active Record contains deserialization of arbitrary YAML
- CVE-2017-17916 SQL injection in n/a
- CVE-2017-17917 SQL injection in n/a
- CVE-2026-33195 Rails Active Storage has possible Path Traversal in DiskService
- CVE-2024-26142 Rails possible ReDoS vulnerability in Accept header parsing in Action Dispatch
Sources
Also known as DEBIAN-CVE-2023-22792, GHSA-p84v-45xj-wwqj, UBUNTU-CVE-2023-22792.